- [Mastodon](https://joinmastodon.org/) - Federated microblogging server, an alternative to GNU social. ([Source Code](https://github.com/tootsuite/mastodon)) `AGPL-3.0``Ruby`
- [Movim](https://movim.eu/) - Modern, federated social network based on XMPP, with a fully featured group-chat, subscriptions and microblogging. ([Source Code](https://github.com/movim/movim)) `AGPL-3.0``PHP`
- [Newebe](http://newebe.org/) - Distributed Social Network. ([Source Code](https://github.com/gelnior/newebe)) `AGPL-3.0``Python`
- [NodeBB](https://nodebb.org/) - Node.js based forum software built for the modern web. ([Source Code](https://github.com/NodeBB/NodeBB)) `GPL-3.0``Nodejs`
- [orangeforum](http://www.goodoldweb.com/) - Orange Forum is an easy to deploy forum that has minimal dependencies and uses very little javascript. ([Demo](https://groups.goodoldweb.com/), [Source Code](https://github.com/s-gv/orangeforum)) `BSD-3-Clause``Go`