What are free tools for rig creature 3D models?

Free tools for rigging creature 3D models include Blender (built-in Armature), Mixamo (AI auto-rigging), and Autodesk FBX Review (rig preview). Blender lets you create custom rigs with bones, constraints, and skinning for full control over your creature’s movement. Mixamo auto-rigs models in minutes and offers pre-made animations, perfect for quick setup without manual work. FBX Review lets you preview rigs to check if bones, joints, or skinning work as intended before finalizing. New to rigging? Try Mixamo for fast, easy results; if you want to build unique, tailored rigs, start with Blender’s beginner-friendly rigging tutorials.