https://assetstore.unity.com/packages/tools/physics/puppetmaster-48977
https://assetstore.unity.com/packages/tools/animation/final-ik-14290
Tutorials
https://www.youtube.com/user/SnuffThePuppy
Integration with Invector (possibly outdated)
https://invector.proboards.com/thread/2023/puppetmaster-invector-integration-updated-2021