Activitypub microblogging alternatives
There are a few alternatives to Mastodon in the fediverse. You can easily find some list in websites like Join the fediverse, Fediverse Party and Fediverse Info.
But I want to list someone that I found interesting:
misskey - Built with typescript has a really cool Reactions feature.
Pleroma - Supports both ActivityPub and OStatus. It is developed in Elixir.
Firefish - This is a fork of Misskey.
Go to social - Very lightweight. I’ve tested it and it is very easy to setup and getting it going. It is developed in Go lang.
Takahē - Very interesting project. With one installation of Takahē you can run host multiple domains, so you can have @paul@yourdomain.com but also can host your friend John @john@yourfriend.com. It is built using Python and the Django framework.
That is a short list of what I’ve seen so far. There are many more alternatives for a federated social network.