Introducing . Hollo is an -enabled single-user microblogging software. Although it's for a single user, it also supports creating and running multiple accounts for different topics.
It's headless, meaning you can use existing client apps instead, with its Mastodon-compatible APIs. It has most feature parity with Mastodon. Two big differences with Mastodon is that you can use in the content of your posts and you can quote another post.
Oh, and Hollo is built using and .
https://github.com/dahlia/hollo