Cessen's Rigify Extensions
This is a collection of custom rig types and metarigs that can be used with Rigify in Blender 2.8x and higher.
Special thanks to angavrilov for the initial port of these rig types to the new Rigify system.
Support
For the time being, I am only maintaining these rigs for my own personal use. If you happen to find them useful, that's great! Feel free to use them. But do keep in mind that I don't plan to support them, maintain backwards compatibility, etc. So if you choose to use them in a critical setting (e.g. a production environment), you should probably also plan to maintain a fork of your own.