diff --git a/.vscode/settings.json b/.vscode/settings.json
index 37a3b13..3a2609e 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,11 +1,11 @@
 {
     "python.analysis.extraPaths": [
-        "D:\\SteamLibrary\\steamapps\\common\\Blender\\4.3\\scripts\\addons",
-        "C:\\Users\\Onan\\AppData\\Roaming\\Blender Foundation\\Blender\\4.3\\extensions\\user_default\\",//C:/Users/Onan/AppData/Roaming/Blender Foundation/Blender/4.0/scripts/addons
+        "D:\\SteamLibrary\\steamapps\\common\\Blender\\4.4\\scripts\\addons",
+        "C:\\Users\\Onan\\AppData\\Roaming\\Blender Foundation\\Blender\\4.4\\extensions\\user_default\\",//C:/Users/Onan/AppData/Roaming/Blender Foundation/Blender/4.0/scripts/addons
         "D:\\blender stuff\\blendercodestuff\\4.3",
-        "D:\\SteamLibrary\\steamapps\\common\\Blender\\4.3\\python\\lib\\site-packages",
-        "/Users/frankche/Documents/blendercoding/4.1/",
-        "/Users/frankche/Library/Application Support/Blender/4.3/extensions/user_default/"
+        "D:\\SteamLibrary\\steamapps\\common\\Blender\\4.4\\python\\lib\\site-packages",
+        "/Users/frankche/Documents/blendercoding/4.3/",
+        "/Users/frankche/Library/Application Support/Blender/4.4/extensions/user_default/"
     ],
     "python.analysis.diagnosticSeverityOverrides": {
         "reportInvalidTypeForm": "none"
diff --git a/core/common.py b/core/common.py
index 4190571..e0093e9 100644
--- a/core/common.py
+++ b/core/common.py
@@ -15,10 +15,9 @@ from bpy.types import (Context, Object, Modifier, EditBone, Operator, Material,
 from functools import lru_cache
 from bpy.props import PointerProperty, IntProperty, StringProperty
 from bpy.utils import register_class
-from ..core.logging_setup import logger
-from ..core.translations import t
-from ..core.dictionaries import bone_names
-from .dictionaries import reverse_bone_lookup, bone_names
+from .logging_setup import logger
+from .translations import t
+from .dictionaries import reverse_bone_lookup, simplify_bonename
 
 class SceneMatClass(PropertyGroup):
     mat: PointerProperty(type=Material)
@@ -383,7 +382,7 @@ def clear_unused_data_blocks() -> int:
                       if isinstance(getattr(bpy.data, attr), bpy.types.bpy_prop_collection))
     return initial_count - final_count
 
-def identify_bones(arm_data: bpy.types.Armature, context: bpy.types.Context) -> Dict[str,str]:
+def identify_bones(arm_data: bpy.types.Armature) -> Dict[str,str]:
     """Identify bone names in an armature based on our reverse dictionary, so there is no confusion to what a bone is.
     Essentially makes a dictionary of keys from dictionaries.bone_names like "hips", and the corosponding value is the bone that can be mapped to that key."""
     returned: Dict[str,str] = {}
@@ -495,6 +494,24 @@ def fix_zero_length_bones(armature: Object) -> None:
             bone.length = 0.001
     bpy.ops.object.mode_set(mode='OBJECT')
 
+def remove_unused_vertex_groups(mesh: Object) -> int:
+    """Remove vertex groups with no weights"""
+    removed: int = 0
+    for vg in mesh.vertex_groups:
+        has_weights: bool = False
+        for vert in mesh.data.vertices:
+            for group in vert.groups:
+                if group.group == vg.index and group.weight > 0.001:
+                    has_weights = True
+                    break
+            if has_weights:
+                break
+        if not has_weights:
+            mesh.vertex_groups.remove(vg)
+            removed = removed+1
+
+    return removed
+
 def calculate_bone_orientation(mesh: Object, vertices: List[Any]) -> Tuple[Vector, float]:
     """Calculate optimal bone orientation based on mesh geometry"""
     if not vertices:
@@ -518,6 +535,18 @@ def add_armature_modifier(mesh: Object, armature: Object) -> None:
     modifier: Modifier = mesh.modifiers.new('Armature', 'ARMATURE')
     modifier.object = armature
 
+def get_modifiers(self: Optional[Any] = None, context: Optional[Context] = None) -> List[Tuple[str, str, str]]:
+    returned: List[Tuple[str, str, str]] = []
+    if context.active_object == None:
+        return returned
+    if context.active_object.type != "MESH":
+        return returned
+    for mod in context.active_object.modifiers:
+        returned.append((mod.name,mod.name,""))
+
+    return returned
+
+
 def get_shapekeys(context: Context, 
                   names: List[str], 
                   is_mouth: bool, 
diff --git a/core/resonite_loader/resonite_animx.py b/core/resonite_loader/resonite_animx.py
index ad6c4cf..4d15155 100644
--- a/core/resonite_loader/resonite_animx.py
+++ b/core/resonite_loader/resonite_animx.py
@@ -3,7 +3,6 @@ from os import replace
 from re import S
 from types import FrameType
 
-import lz4.block
 from . import resonite_types
 from . import common
 
diff --git a/core/resonite_utils.py b/core/resonite_utils.py
index e5a210b..02d56ed 100644
--- a/core/resonite_utils.py
+++ b/core/resonite_utils.py
@@ -5,10 +5,10 @@ from numpy import double
 from typing import Set, Dict
 import re
 
-from .common import get_active_armature, simplify_bonename, validate_armature, ProgressTracker, identify_bones
+from .common import get_active_armature, ProgressTracker, identify_bones
 from bpy.types import Context, Operator
 from ..core.translations import t
-from ..core.dictionaries import bone_names, resonite_translations
+from ..core.dictionaries import bone_names, resonite_translations, simplify_bonename
 from ..core.logging_setup import logger
 from ..core.armature_validation import validate_armature
 
@@ -77,7 +77,7 @@ class AvatarToolkit_OT_ConvertResonite(Operator):
 
             total_bones = len(arm_data.bones)
             with ProgressTracker(context, total_bones, t("Tools.convert_resonite.operation")) as progress:
-                for key_simple,bone_name in identify_bones(arm_data,context).items():
+                for key_simple,bone_name in identify_bones(arm_data).items():
 
                     if key_simple in resonite_translations:
                         new_name = resonite_translations[key_simple]
diff --git a/functions/custom_tools/armature_merging.py b/functions/custom_tools/armature_merging.py
index 133fe65..7cd0807 100644
--- a/functions/custom_tools/armature_merging.py
+++ b/functions/custom_tools/armature_merging.py
@@ -2,15 +2,16 @@ import bpy
 import numpy as np
 from typing import List, Optional, Dict, Set, Tuple, Any
 from bpy.types import Context, Object, Operator, ArmatureModifier, EditBone, VertexGroup, Mesh, ShapeKey
-from ...core.dictionaries import bone_names
 from ...core.logging_setup import logger
 from ...core.translations import t
 from ...core.common import (
     get_all_meshes,
     fix_zero_length_bones,
+    remove_unused_vertex_groups,
     clear_unused_data_blocks,
     join_mesh_objects,
     remove_unused_shapekeys,
+    identify_bones,
 )
 from ...core.dictionaries import simplify_bonename
 
@@ -175,44 +176,22 @@ def merge_armatures(
     for bone in merge_armature_data.bones:
         original_parents[bone.name] = bone.parent.name if bone.parent else None
 
-    #create reverse lookup
-    reverse_bone_lookup = {}
-    for preferred_name, name_list in bone_names.items():
-        for name in name_list:
-            reverse_bone_lookup[name] = preferred_name
-    
-    # Get base bone names
-    base_bone_names: Set[str] = {bone.name for bone in base_armature.data.bones}
-
-    base_armature_standards: Dict[str,Optional[str]] = {}
-    for bone in base_bone_names:
-        if simplify_bonename(bone) in reverse_bone_lookup:
-            base_armature_standards[reverse_bone_lookup[simplify_bonename(bone)]] = bone
-
     # Switch to edit mode on merge armature and rename bones
     bpy.context.view_layer.objects.active = merge_armature
     bpy.ops.object.mode_set(mode='EDIT')
     
-    # Handle bone renaming/removing to target armature.
-    bone_names_source: list[str] = [bone.name for bone in merge_armature_data.edit_bones]
-    for bone in bone_names_source:
-        bone_name = bone
-        if bone_name not in base_bone_names: #not auto mergable to original
-            
-            if simplify_bonename(bone_name) in reverse_bone_lookup: #if is a standard bone through standard translation.
-                if reverse_bone_lookup[simplify_bonename(bone_name)] in base_armature_standards: #if this bone equals for example, "hips", does a bone that should be "hips" exist on our target armature?
-                    #if so, rename this bone to that one
-                    merge_armature_data.edit_bones[bone_name].name = base_armature_standards[reverse_bone_lookup[simplify_bonename(bone_name)]]
-                    bone_name = merge_armature_data.edit_bones[bone_name].name
-                    #adjust original parents list to point to the new name.
-                    for child_bone in merge_armature_data.edit_bones[bone_name]:
-                        original_parents[child_bone.name] = bone_name
-                    #then remove so it doesn't clash when merged.
-                    merge_armature_data.edit_bones.remove(merge_armature_data.edit_bones[bone_name])
-                    continue
-
-            #if it really doesn't have a counter part, just don't bother.
-        else:
+    # Identify our bones to what their standard name is like "hips" for source and target armature bones.
+    identifed_base_bone_names: Dict[str,str] = identify_bones(base_armature.data)
+    identified_bone_names_source: Dict[str,str] = identify_bones(merge_armature_data)
+    
+    for standard,bone_name in identified_bone_names_source.items():
+        if standard in identifed_base_bone_names: #if the bone we are at on our merge armature has a standard name translation for the target armature
+            merge_armature_data.edit_bones[bone_name].name = identifed_base_bone_names[standard] #change it's name to the one on the target merge to armature's coorisponding standard bone
+            bone_name = merge_armature_data.edit_bones[bone_name].name
+            #adjust original parents list to point to the new name.
+            for child_bone in merge_armature_data.edit_bones[bone_name]:
+                original_parents[child_bone.name] = bone_name
+            #then remove so it doesn't clash when merged.
             merge_armature_data.edit_bones.remove(merge_armature_data.edit_bones[bone_name])
 
     # Return to object mode
@@ -399,20 +378,6 @@ def mix_vertex_groups(mesh: Object, vg_from_name: str, vg_to_name: str) -> None:
     vg_to.add(range(num_vertices), weights_combined.tolist(), 'REPLACE')
     mesh.vertex_groups.remove(vg_from)
 
-def remove_unused_vertex_groups(mesh: Object) -> None:
-    """Remove vertex groups with no weights"""
-    for vg in mesh.vertex_groups:
-        has_weights: bool = False
-        for vert in mesh.data.vertices:
-            for group in vert.groups:
-                if group.group == vg.index and group.weight > 0.001:
-                    has_weights = True
-                    break
-            if has_weights:
-                break
-        if not has_weights:
-            mesh.vertex_groups.remove(vg)
-
 def apply_armature_to_mesh(armature: Object, mesh: Object) -> None:
     """Apply armature deformation to mesh"""
     armature_mod: ArmatureModifier = mesh.modifiers.new('PoseToRest', 'ARMATURE')
diff --git a/functions/custom_tools/force_apply_modifier.py b/functions/custom_tools/force_apply_modifier.py
new file mode 100644
index 0000000..2d478ab
--- /dev/null
+++ b/functions/custom_tools/force_apply_modifier.py
@@ -0,0 +1,139 @@
+import traceback
+import bpy
+import re
+from typing import Any, Set, Dict, List, Optional, Tuple
+from bpy.types import (
+    Operator, 
+    Context, 
+    Object, 
+    Material, 
+    NodeTree,
+    ShaderNodeTexImage
+)
+import mathutils
+import bmesh
+from ...core.logging_setup import logger
+from ...core.translations import t
+from ...core.common import (
+    get_active_armature,
+    get_all_meshes,
+    ProgressTracker,
+    calculate_bone_orientation,
+    add_armature_modifier,
+    get_modifiers,
+    has_shapekeys
+)
+from ...core.armature_validation import validate_armature
+
+class AvatarToolkit_OT_ApplyModifierForShapkeyObj(bpy.types.Operator):
+    """Operator for forcing the application of a modifier. A shortened way of saying \"Apply modifier for object with shapekeys\""""
+    bl_idname: str = 'avatar_toolkit.merge_armatures'
+    bl_label: str = t('Tools.apply_modifier_on_shapekey_obj')
+    bl_description: str = t('Tools.apply_modifier_on_shapekey_obj_desc')
+    bl_options: Set[str] = {'REGISTER', 'UNDO'}
+
+    modifier: bpy.props.EnumProperty(items=get_modifiers,name="Modifier To Apply")
+
+
+    def draw(self, context: Context) -> None:
+        """Draw the operator's UI"""
+        layout = self.layout
+        layout.prop(self, "modifier")
+
+    def invoke(self, context: Context, event: bpy.types.Event) -> set[str]:
+        """Initialize the operator"""
+        return context.window_manager.invoke_props_dialog(self)
+    
+    @classmethod
+    def poll(cls, context: Context) -> bool:
+        if context.active_object != None:
+            return context.active_object.type == "MESH"
+        return False
+    
+    def execute(self, context: Context) -> Set[str]:
+        
+        obj: bpy.types.Object = context.active_object
+        mesh: bpy.types.Mesh = obj.data
+
+        shapes: list[bpy.types.Object] = []
+        
+        bpy.ops.object.mode_set(mode="OBJECT")
+        
+        if has_shapekeys(obj):
+            #reset shapekeys
+            for idx,key in enumerate(mesh.shape_keys.key_blocks):
+                obj.active_shape_key_index = idx
+                obj.active_shape_key.value = 0
+                
+            for idx,key in enumerate(mesh.shape_keys.key_blocks):
+                # duplicate object for shapekey
+                bpy.ops.object.select_all(action="DESELECT")
+                context.view_layer.objects.active = obj
+                obj.select_set(True) 
+                bpy.ops.object.duplicate()
+                
+                # name new object after shapekey
+                new_obj = context.view_layer.objects.active
+                new_obj.select_set(True) 
+                new_obj.active_shape_key_index = idx
+                new_obj.name = new_obj.active_shape_key.name
+                
+                #add to cleanup list
+                shapes.append(new_obj)
+                
+                #make basis the same shape as shapekey
+                for idx,point in enumerate(new_obj.active_shape_key.points):
+                    new_obj.data.vertices[idx].co.xyz = point.co.xyz
+
+                #remove all shaoekeys on new object and then apply modifier
+                bpy.ops.object.shape_key_remove(all=True,apply_mix=False)
+                try:
+                    bpy.ops.object.modifier_apply(modifier=self.modifier)
+                except Exception as e:
+                    self.report({'ERROR'}, f"Shapekey modifier apply for shapekey \"{new_obj.name}\" failed!!")
+                    print(f"Shapekey modifier apply for shapekey \"{new_obj.name}\" failed!!")
+                    print(traceback.format_exc(e))
+                    #clean up after critical failure
+                    for shape in shapes: 
+                       bpy.data.objects.remove(shape)#faster than ops delete
+                bpy.ops.object.select_all(action="DESELECT")
+                    
+                    
+                    
+            try:
+                #remove shapekeys on original object
+                bpy.ops.object.select_all(action="DESELECT")    
+                obj.select_set(True)
+                context.view_layer.objects.active = obj
+                bpy.ops.object.shape_key_remove(all=True,apply_mix=False)
+                bpy.ops.object.modifier_apply(modifier=self.modifier)
+                bpy.ops.object.select_all(action="DESELECT")    
+                #delete first shapekey object aka basis
+                bpy.data.objects.remove(shapes.pop(0))
+
+                #join all objects with applied modifiers back together as shapes
+                for shape in shapes:
+                    shape.select_set(True)
+                obj.select_set(True)
+                context.view_layer.objects.active = obj
+                bpy.ops.object.join_shapes()
+            except Exception as e:
+                
+                self.report({'ERROR'}, f"Shapekey joining failed!!")
+                print(f"Shapekey joining failed!!")
+                print(traceback.format_exc(e))
+                #clean up after critical failure
+                for shape in shapes: 
+                    bpy.data.objects.remove(shape)#faster than ops delete
+                
+            #final clean up
+            for shape in shapes: 
+                bpy.data.objects.remove(shape)#faster than ops delete
+
+        else:
+            #mesh has no shapekeys, just apply normally.
+            bpy.ops.object.modifier_apply(modifier=self.modifier)
+
+
+
+        return {'FINISHED'}
\ No newline at end of file
diff --git a/functions/tools/bone_tools.py b/functions/tools/bone_tools.py
index 78e6c72..9df48ce 100644
--- a/functions/tools/bone_tools.py
+++ b/functions/tools/bone_tools.py
@@ -7,7 +7,9 @@ from ...core.common import (
     get_active_armature, 
     get_all_meshes,
     ProgressTracker,
-    restore_bone_transforms
+    restore_bone_transforms,
+    remove_unused_vertex_groups,
+    identify_bones,
 )
 from ...core.armature_validation import validate_armature, validate_bone_hierarchy
 
@@ -262,6 +264,23 @@ class AvatarToolKit_OT_RemoveZeroWeightBones(Operator):
         self.report({'INFO'}, t("Tools.clean_weights_success", count=removed_count))
         return {'FINISHED'}
 
+class AvatarToolKit_OT_RemoveZeroWeightVertexGroups(Operator):
+    """Operator to remove vertex groups with no weights"""
+    bl_idname = "avatar_toolkit.clean_vertex_groups"
+    bl_label = t("Tools.clean_vertex_groups")
+    bl_description = t("Tools.clean_vertex_groups_desc")
+    bl_options = {'REGISTER', 'UNDO'}
+
+    def execute(self, context: Context) -> set[str]:
+        meshes: list[bpy.types.Object] = get_all_meshes(context)
+        removed: int = 0
+        for mesh_obj in meshes:
+            removed = removed+remove_unused_vertex_groups(mesh_obj)
+
+        self.report({'INFO'}, t("Tools.vertex_groups_removed", count=removed))
+        return {'FINISHED'}
+
+
 class AvatarToolKit_OT_RemoveSelectedBones(Operator):
     """Operator to remove selected bones from the zero weight bones list"""
     bl_idname = "avatar_toolkit.remove_selected_bones"
@@ -285,4 +304,111 @@ class AvatarToolKit_OT_RemoveSelectedBones(Operator):
         toolkit.zero_weight_bones.clear()
         
         self.report({'INFO'}, t("Tools.bones_removed", count=len(selected_bones)))
-        return {'FINISHED'}
\ No newline at end of file
+        return {'FINISHED'}
+
+
+class AvatarToolKit_OT_FlipCurrentKeyFrames(Operator):
+    """Operator to flip the selected bone keyframes using blender's flip pose."""
+    bl_idname = "avatar_toolkit.flip_pose_frames"
+    bl_label = t("Tools.flip_pose_frames")
+    bl_description = t("Tools.flip_pose_frames_desc")
+    bl_options = {'REGISTER', 'UNDO'}
+
+    @classmethod
+    def poll(cls, context: Context) -> bool:
+        """Check if operator can be executed"""
+        armature = get_active_armature(context)
+        if not armature:
+            return False
+        if context.mode != 'POSE':
+            return False
+        if not armature.animation_data:
+            return False
+        valid, _, _ = validate_armature(armature)
+        return valid
+
+    def execute(self, context: Context) -> set[str]:
+        armature = get_active_armature(context)
+
+        
+
+        armature_data: bpy.types.Armature = armature.data
+
+        standard_mappings: Dict[str,str] = identify_bones(armature_data)
+
+        
+
+        
+        # Do we need this? If flipping in the future has issues, then uncommenting this may help - @989onan
+        #To make sure our flip pose is extremely reliable, we're gonna temp rename all bones to standard names to make the posing work.
+        #for standard,bone_name in standard_mappings.items():
+        #    armature_data.bones[bone_name].name = standard
+        
+        #save our selection
+        selected: list[bool] = [False] * len(armature_data.bones)
+        armature_data.bones.foreach_get("select", selected) 
+        #select everything
+        armature_data.bones.foreach_set("select", [False] * len(armature_data.bones)) 
+
+
+        
+        #create a set for every frame time where we need to key a keyframe for the flipped pose
+        times: Dict[float,list[bpy.types.FCurve]] = {}
+        for curve in armature.animation_data.action.fcurves:
+            if not curve.data_path.startswith("pose"):
+                continue
+            for point in curve.keyframe_points:
+                if point.select_control_point:
+                    if point.co.x not in times:
+                        times[point.co.x] = []
+                
+                    times[point.co.x].append(curve)
+
+        for time,curves in times.items():
+            context.scene.frame_set(frame=int(time), subframe=float(time-float(int(time))))
+            armature_data.bones.foreach_set("select", [True] * len(armature_data.bones)) 
+            bpy.ops.pose.copy()
+            armature_data.bones.foreach_set("select", [False] * len(armature_data.bones)) 
+            bpy.ops.pose.paste(flipped=True,selected_mask=False)
+            
+
+            
+
+            for curve in curves:
+
+                bone_name: str = curve.data_path.replace("pose.bones[\"","")
+                bone_name = bone_name[:bone_name.index("\"")]
+                
+                armature_data.bones[bone_name].select = True
+
+                bpy.ops.pose.select_mirror(extend=False)
+
+                #this can get the opposite side bone's data path and key it, if it is ever needed - @989onan
+                #for bone in armature_data.bones:
+                #    if bone.select == True:
+                #        bone_name = bone.name
+                #        break
+                #new_path = curve.data_path[:curve.data_path.index("[")+1]+"\""+bone_name+"\""+curve.data_path[curve.data_path.index("]"):]
+
+                if armature.keyframe_insert(data_path=curve.data_path, index=curve.array_index, frame=time):
+                    #if armature.keyframe_insert(data_path=new_path, index=curve.array_index, frame=time):
+                    continue
+                self.report({'ERROR'}, f"Keyframe insertion for key with data path \"{curve.data_path}\" and frame {time} failed!")
+                return {'FINISHED'}
+
+
+                    
+        
+
+
+
+
+        
+        # Do we need this? If flipping in the future has issues, then uncommenting this may help - @989onan
+        #bring our names back as to not break their model.
+        #for standard,bone_name in standard_mappings.items():
+        #    armature_data.bones[standard].name = bone_name
+
+        # restore selection
+        armature_data.bones.foreach_set("select", selected) 
+        return {'FINISHED'}
diff --git a/functions/tools/general_mesh_tools.py b/functions/tools/general_mesh_tools.py
new file mode 100644
index 0000000..0ac6d3c
--- /dev/null
+++ b/functions/tools/general_mesh_tools.py
@@ -0,0 +1,101 @@
+import bpy
+import numpy as np
+from bpy.types import Operator, Context
+from typing import Set
+from ...core.translations import t
+from ...core.logging_setup import logger
+from ...core.common import get_active_armature, get_all_meshes
+from ...core.armature_validation import validate_armature
+
+import bmesh
+
+
+class MapItem():
+    length: int
+    current_node: bmesh.types.BMVert
+    marched_paths: list[bmesh.types.BMEdge]
+
+class AvatarToolkit_OT_SelectShortestSeamPath(Operator):
+    """Find the shortest seam path between two vertices."""
+    bl_idname = "avatar_toolkit.find_shortest_seam_path"
+    bl_label = t("Tools.find_shortest_seam_path")
+    bl_description = t("Tools.find_shortest_seam_path_desc")
+    bl_options = {'REGISTER', 'UNDO'}
+    
+    @classmethod
+    def poll(cls, context: Context) -> bool:
+        if context.mode != "EDIT_MESH":
+            return False
+        mesh_data: bpy.types.Mesh = context.active_object.data
+        mesh = bmesh.from_edit_mesh(mesh_data)
+        selected: int = 0
+        for vert in mesh.verts:
+            if vert.select == True:
+                selected = selected+1
+                if selected > 2:
+                    return False
+                found_seam: bool = False
+                for edge in vert.link_edges:
+                    if edge.seam:
+                        found_seam = True
+                if not found_seam:
+                    return False
+        if selected < 2:
+            return False
+        armature = get_active_armature(context)
+        if not armature:
+            return False
+        valid, _, _ = validate_armature(armature)
+        return valid
+        
+    def execute(self, context: Context) -> Set[str]:
+        mesh_data: bpy.types.Mesh = context.active_object.data
+        mesh = bmesh.from_edit_mesh(mesh_data)
+        vert1: bmesh.types.BMVert = None
+        vert2: bmesh.types.BMVert = None
+        for vert in mesh.verts:
+            if vert.select == True:
+                if vert1 == None:
+                    vert1 = vert
+                else:
+                    vert2 = vert
+        
+        current_verts: list[MapItem] = []
+
+        first_item: MapItem  = MapItem()
+        first_item.current_node = vert1
+        first_item.length = 0
+        first_item.marched_paths = []
+        current_verts.append(first_item)
+
+        def find_next_edge() -> list[bmesh.types.BMEdge]:
+            if len(current_verts) == 0: #all paths have been exausted.
+                return []
+            for mapeditem in current_verts:
+                current_verts.remove(mapeditem)
+                for edge in mapeditem.current_node.link_edges:
+                    if edge.seam and (edge not in mapeditem.marched_paths):
+                        for vert_new in edge.verts:
+                            if vert_new != mapeditem.current_node:
+                                if vert_new == vert2:
+                                    mapeditem.marched_paths.append(edge)
+                                    return mapeditem.marched_paths
+                                first_item: MapItem  = MapItem()
+                                first_item.current_node = vert_new
+                                first_item.length = mapeditem.length+1
+                                first_item.marched_paths = []
+                                first_item.marched_paths.extend(mapeditem.marched_paths)
+                                first_item.marched_paths.append(edge)
+                                current_verts.append(first_item)
+            return find_next_edge()
+            
+        mesh.select_flush(False)
+        path: list[bmesh.types.BMEdge] = find_next_edge()
+        for edge in path:
+            edge.select = True
+            for vert in edge.verts:
+                vert.select = True
+        bpy.ops.mesh.select_mode(type='EDGE')
+    
+        return {'FINISHED'}
+
diff --git a/functions/tools/uv_tools.py b/functions/tools/uv_tools.py
index e7dcc5d..6002d73 100644
--- a/functions/tools/uv_tools.py
+++ b/functions/tools/uv_tools.py
@@ -31,6 +31,8 @@ class AvatarToolkit_OT_AlignUVEdgesToTarget(Operator):
                 return False
         if not context.space_data:
             return False
+        if not hasattr(context.space_data, "show_uvedit"):
+            return False
         if not context.space_data.show_uvedit:
             return False
         if context.scene.tool_settings.use_uv_select_sync:
diff --git a/functions/visemes.py b/functions/visemes.py
index da332bc..889306a 100644
--- a/functions/visemes.py
+++ b/functions/visemes.py
@@ -124,7 +124,7 @@ class VisemePreview:
         cls._preview_shapes = None
         cls._mesh_name = ""
 
-class ATOOLKIT_OT_preview_visemes(Operator):
+class AvatarToolkit_OT_PreviewVisemes(Operator):
     """Operator for previewing viseme shapes in real-time"""
     bl_idname: str = "avatar_toolkit.preview_visemes"
     bl_label: str = t("Visemes.preview_label")
@@ -181,7 +181,7 @@ def validate_deformation(mesh, mix_data):
     mesh_size = max(mesh.dimensions)
     return max_deform < (mesh_size * 0.4)
 
-class ATOOLKIT_OT_create_visemes(Operator):
+class AvatarToolkit_OT_CreateVisemes(Operator):
     """Operator for generating VRChat-compatible viseme shape keys"""
     bl_idname: str = "avatar_toolkit.create_visemes"
     bl_label: str = t("Visemes.create_label")
diff --git a/resources/translations/en_US.json b/resources/translations/en_US.json
index 39b1183..2c642d6 100644
--- a/resources/translations/en_US.json
+++ b/resources/translations/en_US.json
@@ -167,6 +167,7 @@
     "Optimization.remove_doubles_completed": "Remove doubles completed successfully",
 
     "Tools.label": "Tools",
+    "Tools.mesh_title": "Mesh Tools",
     "Tools.general_title": "General Tools",
     "Tools.select_armature": "Select an Armature",
     "Tools.convert_resonite": "Convert to Resonite",
@@ -191,6 +192,8 @@
     "Tools.merge_twist_bones_desc": "When checked, twist bones will be kept, even if there are zero-weight",
     "Tools.clean_weights": "Remove Zero Weight Bones",
     "Tools.clean_weights_desc": "Remove bones with no vertex weights",
+    "Tools.clean_vertex_groups": "Remove Unused Vertex Groups",
+    "Tools.clean_vertex_groups_desc": "Remove vertex groups on meshes assigned to no vertices.",
     "Tools.preserve_parent_bones": "Preserve Parent Bones",
     "Tools.preserve_parent_bones_desc": "Keep bones that have children even if they have no weights",
     "Tools.target_bone_type": "Target Bone Type",
@@ -203,7 +206,10 @@
     "Tools.zero_weight_bones_found": "Zero weight bones found: {bones}",
     "Tools.remove_selected_bones": "Remove Selected Bones",
     "Tools.remove_selected_bones_desc": "Remove selected zero weight bones from armature",
+    "Tools.flip_pose_frames": "Flip Selected Armature Key Frames",
+    "Tools.flip_pose_frames_desc": "Takes the selected keyframes and sets them to a mirrored pose, gotten from the opposite side of the armature on that frame.\nSelecting the entire animation's keyframes will flip the entire animation.",
     "Tools.bones_removed": "Removed {count} bones",
+    "Tools.vertex_groups_removed": "Removed {count} vertex groups.",
     "Tools.clean_constraints": "Delete Bone Constraints",
     "Tools.clean_constraints_desc": "Remove all bone constraints from armature",
     "Tools.clean_constraints_success": "Removed {count} bone constraints",
@@ -211,6 +217,10 @@
     "Tools.clean_weights_success": "Removed {count} zero-weight bones",
     "Tools.clean_weights_threshold": "Weight Threshold",
     "Tools.clean_weights_threshold_desc": "Minimum weight value to consider a bone as weighted",
+    "Tools.find_shortest_seam_path": "Find Shortest Seam Path",
+    "Tools.find_shortest_seam_path_desc": "Find shortest path of seams between two selected vertices connected to seams.",
+    "Tools.apply_modifier_on_shapekey_obj":"Apply Modifier on Shapekey Object",
+    "Tools.apply_modifier_on_shapekey_obj_desc":"Applies a modifier on an object regardless of it having shapekeys.",
     "Tools.merge_title": "Merge Tools",
     "Tools.merge_to_active": "Merge to Active",
     "Tools.merge_to_active_desc": "Merge selected bones to active bone",
diff --git a/ui/atlas_materials_panel.py b/ui/atlas_materials_panel.py
index 8f8c056..35e6316 100644
--- a/ui/atlas_materials_panel.py
+++ b/ui/atlas_materials_panel.py
@@ -97,14 +97,14 @@ class AvatarToolKit_UL_MaterialTextureAtlasProperties(UIList):
         row = layout.row(align=True)
         row.scale_y = 1.2
         
-        row.operator("avatar_toolkit.select_all_materials", text="", icon='CHECKBOX_HLT', 
+        row.operator(AvatarToolKit_OT_SelectAllMaterials.bl_idname, text="", icon='CHECKBOX_HLT', 
                     emboss=True).tooltip = t("TextureAtlas.select_all_tooltip")
-        row.operator("avatar_toolkit.select_none_materials", text="", icon='CHECKBOX_DEHLT', 
+        row.operator(AvatarToolKit_OT_SelectNoneMaterials.bl_idname, text="", icon='CHECKBOX_DEHLT', 
                     emboss=True).tooltip = t("TextureAtlas.select_none_tooltip")
         row.separator(factor=0.5)
-        row.operator("avatar_toolkit.expand_all_materials", text="", icon='DISCLOSURE_TRI_DOWN', 
+        row.operator(AvatarToolKit_OT_ExpandAllMaterials.bl_idname, text="", icon='DISCLOSURE_TRI_DOWN', 
                     emboss=True).tooltip = t("TextureAtlas.expand_all_tooltip")
-        row.operator("avatar_toolkit.collapse_all_materials", text="", icon='DISCLOSURE_TRI_RIGHT', 
+        row.operator(AvatarToolKit_OT_CollapseAllMaterials.bl_idname, text="", icon='DISCLOSURE_TRI_RIGHT', 
                     emboss=True).tooltip = t("TextureAtlas.collapse_all_tooltip")
         
         row.separator(factor=1.0)
diff --git a/ui/custom_avatar_panel.py b/ui/custom_avatar_panel.py
index 3ebf160..451c88d 100644
--- a/ui/custom_avatar_panel.py
+++ b/ui/custom_avatar_panel.py
@@ -175,12 +175,12 @@ class AvatarToolKit_PT_CustomPanel(Panel):
         # Armature selection with better alignment
         row: UILayout = col.row(align=True)
         row.label(text=t('MergeArmature.into'), icon='ARMATURE_DATA')
-        row.operator("avatar_toolkit.search_merge_armature_into",
+        row.operator(AvatarToolkit_OT_SearchMergeArmatureInto.bl_idname,
                     text=toolkit.merge_armature_into)
 
         row: UILayout = col.row(align=True)
         row.label(text=t('MergeArmature.from'), icon='ARMATURE_DATA')
-        row.operator("avatar_toolkit.search_merge_armature",
+        row.operator(AvatarToolkit_OT_SearchMergeArmature.bl_idname,
                     text=toolkit.merge_armature)
 
         # Merge button with emphasis
@@ -188,7 +188,7 @@ class AvatarToolKit_PT_CustomPanel(Panel):
         col: UILayout = merge_box.column(align=True)
         row: UILayout = col.row(align=True)
         row.scale_y = 1.5
-        row.operator("avatar_toolkit.merge_armatures", icon='ARMATURE_DATA')
+        row.operator(AvatarToolkit_OT_MergeArmature.bl_idname, icon='ARMATURE_DATA')
 
     def draw_mesh_tools(self, layout: UILayout, context: Context) -> None:
         """Draw the mesh attachment tools section"""
@@ -213,17 +213,17 @@ class AvatarToolKit_PT_CustomPanel(Panel):
         # Selection rows with icons and better alignment
         row: UILayout = col.row(align=True)
         row.label(text=t('CustomPanel.select_armature'), icon='ARMATURE_DATA')
-        row.operator("avatar_toolkit.search_merge_armature_into",
+        row.operator(AvatarToolkit_OT_SearchMergeArmatureInto.bl_idname,
                     text=toolkit.merge_armature_into)
 
         row: UILayout = col.row(align=True)
         row.label(text=t('CustomPanel.select_mesh'), icon='MESH_DATA')
-        row.operator("avatar_toolkit.search_attach_mesh",
+        row.operator(AvatarToolkit_OT_SearchAttachMesh.bl_idname,
                     text=toolkit.attach_mesh)
 
         row: UILayout = col.row(align=True)
         row.label(text=t('CustomPanel.select_bone'), icon='BONE_DATA')
-        row.operator("avatar_toolkit.search_attach_bone",
+        row.operator(AvatarToolkit_OT_SearchAttachBone.bl_idname,
                     text=toolkit.attach_bone)
 
         # Attach button with emphasis
@@ -231,4 +231,4 @@ class AvatarToolKit_PT_CustomPanel(Panel):
         col: UILayout = attach_box.column(align=True)
         row: UILayout = col.row(align=True)
         row.scale_y = 1.5
-        row.operator("avatar_toolkit.attach_mesh", icon='ARMATURE_DATA')
+        row.operator(AvatarToolkit_OT_AttachMesh.bl_idname, icon='ARMATURE_DATA')
diff --git a/ui/optimization_panel.py b/ui/optimization_panel.py
index 57e9802..04eb8dc 100644
--- a/ui/optimization_panel.py
+++ b/ui/optimization_panel.py
@@ -3,6 +3,9 @@ from typing import Set
 from bpy.types import Panel, Context, UILayout, Operator
 from .main_panel import AvatarToolKit_PT_AvatarToolkitPanel, CATEGORY_NAME
 from ..core.translations import t
+from ..functions.optimization.materials_tools import AvatarToolkit_OT_CombineMaterials
+from ..functions.optimization.remove_doubles import AvatarToolkit_OT_RemoveDoubles,AvatarToolkit_OT_RemoveDoublesAdvanced
+from ..functions.optimization.mesh_tools import AvatarToolkit_OT_JoinAllMeshes, AvatarToolkit_OT_JoinSelectedMeshes
 
 class AvatarToolKit_PT_OptimizationPanel(Panel):
     """Panel containing mesh and material optimization tools for avatar optimization"""
@@ -26,7 +29,7 @@ class AvatarToolKit_PT_OptimizationPanel(Panel):
         col.separator(factor=0.5)
                 
         # Material Operations
-        col.operator("avatar_toolkit.combine_materials", icon='MATERIAL')
+        col.operator(AvatarToolkit_OT_CombineMaterials.bl_idname, icon='MATERIAL')
         
         # Mesh Cleanup Box
         cleanup_box: UILayout = layout.box()
@@ -36,8 +39,8 @@ class AvatarToolKit_PT_OptimizationPanel(Panel):
         
         # Remove Doubles Row
         row: UILayout = col.row(align=True)
-        row.operator("avatar_toolkit.remove_doubles", icon='MESH_DATA')
-        row.operator("avatar_toolkit.remove_doubles_advanced", icon='PREFERENCES')
+        row.operator(AvatarToolkit_OT_RemoveDoubles.bl_idname, icon='MESH_DATA')
+        row.operator(AvatarToolkit_OT_RemoveDoublesAdvanced.bl_idname, icon='PREFERENCES')
         
         # Join Meshes Box
         join_box: UILayout = layout.box()
@@ -47,5 +50,5 @@ class AvatarToolKit_PT_OptimizationPanel(Panel):
         
         # Join Meshes Row
         row: UILayout = col.row(align=True)
-        row.operator("avatar_toolkit.join_all_meshes", icon='OBJECT_DATA')
-        row.operator("avatar_toolkit.join_selected_meshes", icon='RESTRICT_SELECT_OFF')
+        row.operator(AvatarToolkit_OT_JoinAllMeshes.bl_idname, icon='OBJECT_DATA')
+        row.operator(AvatarToolkit_OT_JoinSelectedMeshes.bl_idname, icon='RESTRICT_SELECT_OFF')
diff --git a/ui/quick_access_panel.py b/ui/quick_access_panel.py
index 59fbd6d..d0d6755 100644
--- a/ui/quick_access_panel.py
+++ b/ui/quick_access_panel.py
@@ -23,7 +23,10 @@ from ..functions.pose_mode import (
     AvatarToolkit_OT_ApplyPoseAsShapekey,
     AvatarToolkit_OT_ApplyPoseAsRest
 )
-from ..core.armature_validation import validate_armature
+from ..core.armature_validation import validate_armature, AvatarToolkit_OT_ValidateTPose
+from ..core.importers.importer import AvatarToolKit_OT_Import
+from ..core.resonite_utils import AvatarToolKit_OT_ExportResonite
+from ..functions.tools.standardize_armature import AvatarToolkit_OT_StandardizeArmature
 
 class AvatarToolKit_OT_ExportFBX(Operator):
     """Export selected objects as FBX"""
@@ -41,8 +44,8 @@ class AvatarToolKit_MT_ExportMenu(Menu):
 
     def draw(self, context: Context) -> None:
         layout: UILayout = self.layout
-        layout.operator("avatar_toolkit.export_fbx", text=t("QuickAccess.export_fbx"))
-        layout.operator("avatar_toolkit.export_resonite", text=t("QuickAccess.export_resonite"))
+        layout.operator(AvatarToolKit_OT_ExportFBX.bl_idname, text=t("QuickAccess.export_fbx"))
+        layout.operator(AvatarToolKit_OT_ExportResonite.bl_idname, text=t("QuickAccess.export_resonite"))
 
 class AvatarToolKit_OT_ExportMenu(Operator):
     """Open the export menu"""
@@ -170,7 +173,7 @@ class AvatarToolKit_PT_QuickAccessPanel(Panel):
                     col = pose_box.column(align=True)
                     col.label(text=t("Validation.tpose.label"), icon='ARMATURE_DATA')
                     col.separator(factor=0.5)
-                    col.operator("avatar_toolkit.validate_tpose", icon='CHECKMARK')
+                    col.operator(AvatarToolkit_OT_ValidateTPose.bl_idname, icon='CHECKMARK')
 
                     if props.show_tpose_validation:
                         validation_box = col.box()
@@ -207,7 +210,7 @@ class AvatarToolKit_PT_QuickAccessPanel(Panel):
                 
                 # Add standardize button
                 standardize_box = info_box.box()
-                standardize_box.operator("avatar_toolkit.standardize_armature", 
+                standardize_box.operator(AvatarToolkit_OT_StandardizeArmature.bl_idname, 
                                     text=t("QuickAccess.standardize_armature"),
                                     icon='MODIFIER')
 
@@ -247,5 +250,5 @@ class AvatarToolKit_PT_QuickAccessPanel(Panel):
         # Import/Export Buttons
         button_row: UILayout = col.row(align=True)
         button_row.scale_y = 1.5
-        button_row.operator("avatar_toolkit.import", text=t("QuickAccess.import"), icon='IMPORT')
-        button_row.operator("avatar_toolkit.export", text=t("QuickAccess.export"), icon='EXPORT')
+        button_row.operator(AvatarToolKit_OT_Import.bl_idname, text=t("QuickAccess.import"), icon='IMPORT')
+        button_row.operator(AvatarToolKit_OT_ExportMenu.bl_idname, text=t("QuickAccess.export"), icon='EXPORT')
diff --git a/ui/settings_panel.py b/ui/settings_panel.py
index 6e7c322..0036ef6 100644
--- a/ui/settings_panel.py
+++ b/ui/settings_panel.py
@@ -10,6 +10,7 @@ from bpy.types import (
 )
 from .main_panel import AvatarToolKit_PT_AvatarToolkitPanel, CATEGORY_NAME
 from ..core.translations import t, get_languages_list
+from ..core.armature_validation import AvatarToolkit_OT_HighlightProblemBones, AvatarToolkit_OT_ClearBoneHighlighting
 
 class AvatarToolkit_OT_TranslationRestartPopup(Operator):
     """Popup dialog shown after language change to inform about restart requirement"""
@@ -71,9 +72,9 @@ class AvatarToolKit_PT_SettingsPanel(Panel):
         col.separator()
         col.prop(props, "highlight_problem_bones")
         if props.highlight_problem_bones:
-            col.operator("avatar_toolkit.highlight_problem_bones", icon='COLOR')
+            col.operator(AvatarToolkit_OT_HighlightProblemBones.bl_idname, icon='COLOR')
         else:
-            col.operator("avatar_toolkit.clear_bone_highlighting", icon='X')
+            col.operator(AvatarToolkit_OT_ClearBoneHighlighting.bl_idname, icon='X')
 
         # Debug Settings
         debug_box = layout.box()
diff --git a/ui/tools_panel.py b/ui/tools_panel.py
index 7fbfe71..b8aa933 100644
--- a/ui/tools_panel.py
+++ b/ui/tools_panel.py
@@ -4,17 +4,22 @@ from bpy.types import Panel, Context, UILayout, Operator, UIList
 from .main_panel import AvatarToolKit_PT_AvatarToolkitPanel, CATEGORY_NAME
 from ..core.translations import t
 
-class AVATAR_TOOLKIT_UL_ZeroWeightBones(UIList):
-    """UI List for displaying zero weight bones with selection options"""
-    def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
-        if self.layout_type in {'DEFAULT', 'COMPACT'}:
-            row = layout.row(align=True)
-            row.prop(item, "selected", text="")
-            row.label(text=item.name)
-            if item.has_children:
-                row.label(text="", icon='OUTLINER_OB_ARMATURE')
-            if item.is_deform:
-                row.label(text="", icon='MOD_ARMATURE')
+from ..core.resonite_utils import AvatarToolkit_OT_ConvertResonite
+from ..functions.tools.mesh_separation import AvatarToolKit_OT_SeparateByLooseParts, AvatarToolKit_OT_SeparateByMaterials
+from ..functions.tools.additional_tools import AvatarToolkit_OT_ApplyTransforms, AvatarToolkit_OT_CleanShapekeys
+from ..functions.tools.bone_tools import (
+    AvatarToolKit_OT_CreateDigitigradeLegs, 
+    AvatarToolKit_OT_DeleteBoneConstraints, 
+    AvatarToolKit_OT_RemoveSelectedBones, 
+    AvatarToolKit_OT_RemoveZeroWeightBones, 
+    AvatarToolKit_OT_RemoveZeroWeightVertexGroups,
+    AvatarToolKit_OT_FlipCurrentKeyFrames
+)
+from ..functions.tools.standardize_armature import AvatarToolkit_OT_StandardizeArmature
+from ..functions.tools.merge_tools import AvatarToolkit_OT_MergeToActive, AvatarToolkit_OT_MergeToParent, AvatarToolkit_OT_ConnectBones
+from ..functions.tools.rigify_converter import AvatarToolkit_OT_ConvertRigifyToUnity
+from ..functions.tools.general_mesh_tools import AvatarToolkit_OT_SelectShortestSeamPath
+from ..functions.custom_tools.force_apply_modifier import AvatarToolkit_OT_ApplyModifierForShapkeyObj
 
 class AvatarToolKit_PT_ToolsPanel(Panel):
     """Panel containing various tools for avatar customization and optimization"""
@@ -37,7 +42,7 @@ class AvatarToolKit_PT_ToolsPanel(Panel):
         col: UILayout = tools_box.column(align=True)
         col.label(text=t("Tools.general_title"), icon='TOOL_SETTINGS')
         col.separator(factor=0.5)
-        col.operator("avatar_toolkit.convert_resonite", text=t("Tools.convert_resonite"), icon='EXPORT')
+        col.operator(AvatarToolkit_OT_ConvertResonite.bl_idname, text=t("Tools.convert_resonite"), icon='EXPORT')
         
         # Separation Tools
         sep_box: UILayout = layout.box()
@@ -45,22 +50,32 @@ class AvatarToolKit_PT_ToolsPanel(Panel):
         col.label(text=t("Tools.separate_title"), icon='MOD_EXPLODE')
         col.separator(factor=0.5)
         row: UILayout = col.row(align=True)
-        row.operator("avatar_toolkit.separate_materials", text=t("Tools.separate_materials"), icon='MATERIAL')
-        row.operator("avatar_toolkit.separate_loose", text=t("Tools.separate_loose"), icon='MESH_DATA')
+        row.operator(AvatarToolKit_OT_SeparateByMaterials.bl_idname, text=t("Tools.separate_materials"), icon='MATERIAL')
+        row.operator(AvatarToolKit_OT_SeparateByLooseParts.bl_idname, text=t("Tools.separate_loose"), icon='MESH_DATA')
         
         # Bone Tools
         bone_box: UILayout = layout.box()
         col = bone_box.column(align=True)
         col.label(text=t("Tools.bone_title"), icon='BONE_DATA')
         col.separator(factor=0.5)
-        col.operator("avatar_toolkit.create_digitigrade", text=t("Tools.create_digitigrade"), icon='BONE_DATA')
+        col.operator(AvatarToolKit_OT_CreateDigitigradeLegs.bl_idname, text=t("Tools.create_digitigrade"), icon='BONE_DATA')
+        col.operator(AvatarToolKit_OT_FlipCurrentKeyFrames.bl_idname,text=t("Tools.flip_pose_frames"),icon="ACTION")
+
+        # Mesh Tools
+        mesh_box: UILayout = layout.box()
+        col = mesh_box.column(align=True)
+        col.label(text=t("Tools.mesh_title"), icon='MESH_DATA')
+        col.separator(factor=0.5)
+        col.operator(AvatarToolkit_OT_SelectShortestSeamPath.bl_idname,text=t("Tools.find_shortest_seam_path"),icon="MESH_DATA")
+        col.operator(AvatarToolkit_OT_ApplyModifierForShapkeyObj.bl_idname,text=t("Tools.apply_modifier_on_shapekey_obj"),icon="SHAPEKEY_DATA")
+        
         
         # Standardization Tools
         standardize_box: UILayout = bone_box.box()
         col = standardize_box.column(align=True)
         col.label(text=t("Tools.standardize_title"), icon='OUTLINER_OB_ARMATURE')
         col.separator(factor=0.5)
-        col.operator("avatar_toolkit.standardize_armature", icon='CHECKMARK')
+        col.operator(AvatarToolkit_OT_StandardizeArmature.bl_idname, icon='CHECKMARK')
 
         # Weight Tools
         weight_box: UILayout = bone_box.box()
@@ -78,12 +93,14 @@ class AvatarToolKit_PT_ToolsPanel(Panel):
                             toolkit, "zero_weight_bones_index")
             
             col = box.column(align=True)
-            col.operator("avatar_toolkit.remove_selected_bones", 
+            col.operator(AvatarToolKit_OT_RemoveSelectedBones.bl_idname, 
                         text=t("Tools.remove_selected_bones"))
         
         row = col.row(align=True)
-        row.operator("avatar_toolkit.clean_weights", text=t("Tools.clean_weights"), icon='GROUP_BONE')
-        row.operator("avatar_toolkit.clean_constraints", text=t("Tools.clean_constraints"), icon='CONSTRAINT_BONE')
+        row.operator(AvatarToolKit_OT_RemoveZeroWeightBones.bl_idname, text=t("Tools.clean_weights"), icon='GROUP_BONE')
+        row.operator(AvatarToolKit_OT_DeleteBoneConstraints.bl_idname, text=t("Tools.clean_constraints"), icon='CONSTRAINT_BONE')
+        row = col.row(align=True)
+        row.operator(AvatarToolKit_OT_RemoveZeroWeightVertexGroups.bl_idname, text=t("Tools.clean_vertex_groups"), icon='CONSTRAINT_BONE')
         
         # Merge Tools
         merge_box: UILayout = layout.box()
@@ -91,22 +108,35 @@ class AvatarToolKit_PT_ToolsPanel(Panel):
         col.label(text=t("Tools.merge_title"), icon='AUTOMERGE_ON')
         col.separator(factor=0.5)
         row = col.row(align=True)
-        row.operator("avatar_toolkit.merge_to_active", text=t("Tools.merge_to_active"), icon='BONE_DATA')
-        row.operator("avatar_toolkit.merge_to_parent", text=t("Tools.merge_to_parent"), icon='BONE_DATA')
-        col.operator("avatar_toolkit.connect_bones", text=t("Tools.connect_bones"), icon='BONE_DATA')
+        row.operator(AvatarToolkit_OT_MergeToActive.bl_idname, text=t("Tools.merge_to_active"), icon='BONE_DATA')
+        row.operator(AvatarToolkit_OT_MergeToParent.bl_idname, text=t("Tools.merge_to_parent"), icon='BONE_DATA')
+        col.operator(AvatarToolkit_OT_ConnectBones.bl_idname, text=t("Tools.connect_bones"), icon='BONE_DATA')
         
         # Additional Tools
         extra_box: UILayout = layout.box()
         col = extra_box.column(align=True)
         col.label(text=t("Tools.additional_title"), icon='TOOL_SETTINGS')
         col.separator(factor=0.5)
-        col.operator("avatar_toolkit.apply_transforms", text=t("Tools.apply_transforms"), icon='OBJECT_DATA')
-        col.operator("avatar_toolkit.clean_shapekeys", text=t("Tools.clean_shapekeys"), icon='SHAPEKEY_DATA')
+        col.operator(AvatarToolkit_OT_ApplyTransforms.bl_idname, text=t("Tools.apply_transforms"), icon='OBJECT_DATA')
+        col.operator(AvatarToolkit_OT_CleanShapekeys.bl_idname, text=t("Tools.clean_shapekeys"), icon='SHAPEKEY_DATA')
 
         # Rigify Tools
         rigify_box: UILayout = layout.box()
         col = rigify_box.column(align=True)
         col.label(text=t("Tools.rigify_title"), icon='ARMATURE_DATA')
         col.separator(factor=0.5)
-        col.operator("avatar_toolkit.convert_rigify_to_unity", icon='ARMATURE_DATA')
+        col.operator(AvatarToolkit_OT_ConvertRigifyToUnity.bl_idname, icon='ARMATURE_DATA')
         col.prop(context.scene.avatar_toolkit, "merge_twist_bones")
+
+
+class AVATAR_TOOLKIT_UL_ZeroWeightBones(UIList):
+    """UI List for displaying zero weight bones with selection options"""
+    def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
+        if self.layout_type in {'DEFAULT', 'COMPACT'}:
+            row = layout.row(align=True)
+            row.prop(item, "selected", text="")
+            row.label(text=item.name)
+            if item.has_children:
+                row.label(text="", icon='OUTLINER_OB_ARMATURE')
+            if item.is_deform:
+                row.label(text="", icon='MOD_ARMATURE')
\ No newline at end of file
diff --git a/ui/uv_panel.py b/ui/uv_panel.py
index d5499b6..b7d5596 100644
--- a/ui/uv_panel.py
+++ b/ui/uv_panel.py
@@ -1,6 +1,7 @@
 import bpy
 from bpy.types import Panel, Context, UILayout
 from ..core.translations import t
+from .main_panel import CATEGORY_NAME
 
 class AvatarToolKit_PT_UVPanel(Panel):
     """Main UV Tools panel for Avatar Toolkit"""
@@ -8,7 +9,7 @@ class AvatarToolKit_PT_UVPanel(Panel):
     bl_idname = "OBJECT_PT_avatar_toolkit_uv_main"
     bl_space_type = 'IMAGE_EDITOR'
     bl_region_type = 'UI'
-    bl_category = "Avatar Toolkit"
+    bl_category = CATEGORY_NAME
 
     def draw(self, context: Context) -> None:
         layout: UILayout = self.layout
diff --git a/ui/uv_tools.py b/ui/uv_tools.py
index ecb258e..d72e303 100644
--- a/ui/uv_tools.py
+++ b/ui/uv_tools.py
@@ -1,6 +1,8 @@
 import bpy
 from bpy.types import Panel, Context, UILayout
 from ..core.translations import t
+from ..functions.tools.uv_tools import AvatarToolkit_OT_AlignUVEdgesToTarget
+from .uv_panel import AvatarToolKit_PT_UVPanel
 
 class AvatarToolKit_PT_UVTools(Panel):
     """UV Tools panel containing UV manipulation operators"""
@@ -8,9 +10,9 @@ class AvatarToolKit_PT_UVTools(Panel):
     bl_idname = "OBJECT_PT_avatar_toolkit_uv_tools"
     bl_space_type = 'IMAGE_EDITOR'
     bl_region_type = 'UI'
-    bl_category = "Avatar Toolkit"
-    bl_parent_id = "OBJECT_PT_avatar_toolkit_uv_main" 
-    bl_order = 3
+    bl_category = "UV Tools"
+    bl_parent_id = AvatarToolKit_PT_UVPanel.bl_idname
+    bl_order = 0
     bl_options = {'DEFAULT_CLOSED'}
 
     def draw(self, context: Context) -> None:
@@ -22,6 +24,6 @@ class AvatarToolKit_PT_UVTools(Panel):
         col.separator(factor=0.5)
         
         row: UILayout = col.row(align=True)
-        row.operator("avatar_toolkit.align_uv_edges_to_target", 
+        row.operator(AvatarToolkit_OT_AlignUVEdgesToTarget.bl_idname, 
                     text=t("UVTools.align_edges"), 
                     icon='GP_MULTIFRAME_EDITING')
diff --git a/ui/visemes_panel.py b/ui/visemes_panel.py
index 0ebb472..11d2a30 100644
--- a/ui/visemes_panel.py
+++ b/ui/visemes_panel.py
@@ -3,6 +3,7 @@ from bpy.types import Panel, Context, UILayout, Object, ShapeKey
 from ..core.translations import t
 from .main_panel import AvatarToolKit_PT_AvatarToolkitPanel, CATEGORY_NAME
 from ..core.common import get_active_armature
+from ..functions.visemes import AvatarToolkit_OT_PreviewVisemes, AvatarToolkit_OT_CreateVisemes
 
 class AvatarToolKit_PT_VisemesPanel(Panel):
     """Panel containing viseme creation and preview tools"""
@@ -65,11 +66,11 @@ class AvatarToolKit_PT_VisemesPanel(Panel):
             col.separator()
 
         preview_text: str = t("Visemes.stop_preview") if props.viseme_preview_mode else t("Visemes.start_preview")
-        col.operator("avatar_toolkit.preview_visemes", text=preview_text, icon='HIDE_OFF')
+        col.operator(AvatarToolkit_OT_PreviewVisemes.bl_idname, text=preview_text, icon='HIDE_OFF')
 
         # Create Box
         create_box: UILayout = layout.box()
         col: UILayout = create_box.column(align=True)
         col.label(text=t("Visemes.create_label"), icon='ADD')
         col.separator(factor=0.5)
-        col.operator("avatar_toolkit.create_visemes", icon='ADD')
+        col.operator(AvatarToolkit_OT_CreateVisemes.bl_idname, icon='ADD')