The final Inverse Kinematics solution for the game developer. 

Update (1.4): 
After a 1.5 year Beta period and more than 2K licensees it is safe to say Final IK is a battle-tested tool. Welcome to the full version of Final IK! 

1.4 brings a number of fixes, improvements and third party integration packages. Final-IK 1.4 is fully compatible with PuppetMaster 0.4. See the Release Notes for full details. 

What can I do with Final IK? 
Take a look at over 30 (and counting) demo videos on YouTube. 

What does it contain? 
Full Body Biped IK 
Biped IK 
CCD IK 
Multi-effector FABRIK 
Look-At IK 
Aim IK 
Limb IK 
Rotation Limits 
Grounder 
Interaction System 
+ 46 Demo scenes and example scripts for all components 

How does it perform? 
Desktop 
Mobile 

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 commented code 
- Tested on a wide range of characters 

Links 
Publisher's Website 

Documentation 
Online User Manual 
Online Script Reference 

E-mails 
support@root-motion.com 
feedback@root-motion.com 
contact@root-motion.com 

What are your plans for the future? 
Continue improving Final IK, it's documentation and add more features. I will be concentrating mostly on developing the Full Body IK part of the package, based on Your feedback and practical use cases. 

Anything else I should know before buying? 
Make sure to read the Online User Manualabout the components that interest you the most.

There is a section about the requirements and limitations of each component.

Looking forward to working together, 
Partel Lang - developer of Final IK