Pleroma
Federated microblogging server, Mastodon, GNU social, & ActivityPub compatible.
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Source code
Other self-hosted communication - social networks and forums
Federated microblogging server with Mastodon, GNU social, and ActivityPub compatibility.
Knowledge-based community software. You can use it to quickly build your Q&A community for product technical support, customer support, user communication, and more.
Comment system built in Golang, providing a lightweight and highly customizable solution for adding comments to your website.
Fast, SQLite-powered forum engine written in ASM.
Powerful plugin that takes your WordPress.org powered site beyond the blog with social-network features like user profiles, activity streams, user groups, and more.
A better commenting experience from Vox Media.
Distributed social networking server.
Advanced forum / community solution based on Ruby and JS.
Powerful open source social networking engine.
Enigma 1/2 is a modern, multi-platform BBS engine with unlimited "callers" and legacy DOS door game support.
Delightfully simple forums. Flarum is the next-generation forum software that makes online discussion fun again.
Social Communication Server.
Run it with Docker
Spin up Pleroma on a VPS in minutes. Use the docker-compose generator to get a starter snippet, or grab a server below.