Kitsune is a new project that has joined the fediverse recently. It's mostly written in Rust and intends on Mastodon API compatibility so it can use the existing app ecosystem. It also just got initial support for viewing full PeerTube and Lemmy posts!
You can learn more at https://joinkitsune.org, and you can follow the development from here at @dev, which is being posted from a Kitsune server! Here is an example post on a live server you can look at as well https://dev.joinkitsune.org/posts/01884a6b-fb67-7d69-a7eb-7aef52fceeb0 #fediverse