The git forgejo server is running at git.treebrary.org and contains pony-related FLOSS projects. Some are mirrored from elsewhere, some are developed here directly (but not that many at the moment)
There are several organizations which are used to group git repos:
Other than that, there may be more depending on whether more domains will be acquired. Personal things will probably be directly on my profile
All software hosted here will be FLOSS, contributions are very welcome, however I don't have the time to setup and possibly moderate user accounts. Plus there are space limitations as well.
So the only way to get code merged right now is to send patch over email or upload it somewhere else and notify me by email. Other option is to request account and I can register you if you wish, however registrations are only for those serious about contributing. Hopefully this will change one day but right now it's how it is.
As long as it Free Software and at least little bit pony-related: Yes, contact me.
Hopefully yes, I'd very much like it to. There probably would be some limitations to keep it pony-related, but I'd like to enable self registration eventually. Once federation will be ready, I will enable it for sure.
But before any of this happens, you can contact me directly for account registration if you really want to
Email: admin {at (@)} treebrary [one dot] org