Autodesk Bifrost finally released and here is a quick gathering of resources that have been flying around on diffrent social platforms. While it isn’t quite ready to build full rigs with as of this release, you can explore the tools for deformation and start getting comfortable with the workflow.
Where to get it
https://area.autodesk.com/bifrost/downloads/
https://area.autodesk.com/bifrost/
How to load and share compounds
A few to download and check out
https://forums.autodesk.com/t5/bifrost-forum/post-your-compounds-here-for-sharing/td-p/8971017
https://forums.autodesk.com/t5/bifrost-forum/paintdeltamap-compound/td-p/8972674
https://forums.autodesk.com/t5/bifrost-forum/mjcg-compounds/m-p/8962108/highlight/true#M452
How to use it
http://help.autodesk.com/view/BIFROST/ENU/
A few more user examples