Check Out This Free Open Source Two-Bone IK Solver for Maya

CG Supervisor Charles Wardlaw Shares His Open Source IK Solver That Has Some Nice Features, Including Built-In Soft IK

Charles Wardlaw is a Character TD and CG Supervisor who just made his feature-sich two-bone IK solver free and open source. Called Grim vIK, the Maya solver incorporates Soft IK and FK/IK Blending along with some other handy features.

The non-iterative IK plugin for Maya also handles reversing, elbow pinning, and eliminates the likelihood of joint pooping. Grim vIK is under the MIT Open Source license initiative and works with Maya 2016 to 2018 on both MacOS and Windows.

Visit the Grim IK repository for binaries here.