Mastodon
Federated microblogging server.
Discourse
Advanced forum / community solution based on Ruby and JS.
Flarum
Delightfully simple forums.
Answer
Knowledge-based community software.
NodeBB
Forum software built for the modern web.
Lemmy
Link aggregator for the fediverse (alternative to Reddit).
diaspora*
Distributed social networking server.
Misskey
Decentralized app-like microblogging server/SNS for the Fediverse, using the ActivityPub protocol like GNU…
PixelFed
Ethical photo sharing platform, powered by ActivityPub federation (alternative to Instagram).
HumHub
Flexible kit for private social networks.
remark42
Lightweight and simple comment engine, which doesn't spy on users.
Isso
Lightweight commenting server written in Python and Javascript.
Redlib
An alternative private front-end to Reddit, with its origins in Libreddit.
Misago
Fully featured modern forum application that is fast, scalable and responsive.
Loomio
Collaborative decision-making tool that makes it easy for anyone to participate in decisions which affect t…
Artalk
Comment system built in Golang, providing a lightweight and highly customizable solution for adding comment…
phpBB
Flat-forum bulletin board software solution that can be used to stay in touch with a group of people or can…
Movim
Modern, federated social network based on XMPP, with a fully featured group-chat, subscriptions and microbl…
Coral
A better commenting experience from Vox Media.
Talkyard
Create a community, where your users can suggest ideas and get questions answered.
Elgg
Powerful open source social networking engine.
Friendica
Social Communication Server.
MyBB
Free, extensible forum software package.
OSSN
Social networking software that allows you to make a social networking website and helps your members build…