Lemmy already federates with Pleroma and Mastodon since two months. But there are a lot more projects out there, and it would be great to federate with them as well. In terms of programming this is now relatively easy, as our rewritten federation code is quite flexible. However, I need help with testing from people who are familiar with these projects. To get started, I will explain what does and doesn’t federate with Mastodon, as that’s the project I am most familiar with. Mastodon can fetch ...