See https://sr.ht/~project-mage/ and Project Mage / Code.

More info coming soon in the wiki portions of the project.

To clone do:

git clone --recurse-submodules https://git.sr.ht/~project-mage/mage

The systems follow a naming scheme:

<author/organization/developer-name>.mage.<system-name>[.subsystem-name]*

Where author-name is up for the original upstream.