Final IK Beta has been released!

Asset Store Page

FinalIK contains:

• Full Body IK system for biped characters
• Biped IK - alternative solution to Unity's built-in Avatar IK system that provides more flexibility and works in Unity Free with the same API
  
• CCD (Cyclic Coordinate Descent) IK
  
• Multi-effector FABRIK (Forward and Backward Reaching IK)
  
• Look-At IK
  
• Aim IK
  
• Limb IK
• Rotation constraints - Angular, Polygonal (Reach Cone), Spline and Hinge rotation limits that work with CCD, FABRIK and Aim solvers

Technical overview:

• Does NOT require Unity Pro
• Does NOT require, but works with Mecanim
• _Tested on Standalone, Web Player, IOS and Android
• Source code included
• Custom undoable inspectors and scene view handles for each component
• Warning system to safeguard from null references and invalid setups
• Optimized for great performance
• Modular, easily extendable. Compose your own custom character rigs
• HTML documentation, fully documented code
• Demo scenes and example scripts for all components
• Tested on a wide range of characters
  

Full Body IK Driving Rig

Mechanical Spiders!

Aiming Systems

Offsetting FBIK Effectors