Mastodon
Social NetworksDecentralized open-source microblogging server
Replaces Twitter, X
Best Multi-User Social Networks for self-hosting
The 69 best Multi-User social networks you can self-host, ranked by community traction.
Discourse
Social NetworksModern open-source community discussion platform
Replaces phpBB, Reddit
NodeBB
Social NetworksNode.js powered forum with real-time updates
Replaces phpBB, Discourse
Lemmy
Social NetworksFederated link aggregator and forum
Replaces Reddit
diaspora*
Social NetworksPrivacy-focused decentralized social network
Replaces Facebook, Twitter
Nitter
Social NetworksAlternative front-end for Twitter that respects your privacy
Replaces X
Misskey
Social NetworksDecentralized fediverse platform with rich features
Replaces Twitter, Tumblr
Piped
Social NetworksAlternative front-end for YouTube
Replaces YouTube
Pixelfed
Social NetworksFederated photo-sharing social platform
Replaces Instagram
Flarum
Social NetworksSimple, fast, free forum software
Replaces phpBB, vBulletin
HumHub
Social NetworksOpen-source social network for communities
Replaces Facebook Workplace, Yammer
WriteFreely
Social NetworksMinimalist federated blogging platform
Replaces Medium, Tumblr
Campsite
Social NetworksSelf-hosted async team social and updates space
Replaces Yammer, Workplace
Redlib
Social NetworksAn alternative private front-end to Reddit, with its origins in
Vanilla Forums
Social NetworksOpen-source community forum software
Replaces phpBB, Discourse
Misago
Social NetworksModern Django-based forum software
Replaces phpBB, Discourse
Loomio
Social NetworksCollaborative decision-making tool that makes it easy for anyone to
Artalk
Social NetworksComment system built in Golang, providing a lightweight and highly
pump.io
Social NetworksStreams server for the social web
Replaces Twitter
Plume
Social NetworksFederated blogging engine for the fediverse
Replaces Medium, WordPress.com
Pleroma
Social NetworksLightweight fediverse microblogging server
Replaces Twitter, Tumblr
Manyfold
Social NetworksSelf-hosted 3D model organizer with ActivityPub
Replaces Thingiverse, Printables
phpBB
Social NetworksClassic free and open-source bulletin board
Replaces vBulletin, Discourse
Elgg
Social NetworksFramework for building social networks
Replaces Facebook Groups, Yammer
Friendica
Social NetworksDecentralized social network with broad federation
Replaces Facebook, Twitter
Mobilizon
Social NetworksFederated tool for events and groups
Replaces Facebook Events, Meetup
Phanpy
Social NetworksMinimalistic opinionated Fediverse ⁂ web client
Replaces Bluesky, Mastodon
Firefish
Social NetworksCustomizable fediverse microblogging platform
Replaces Twitter, Mastodon
OSSN
Social NetworksSocial networking software that allows you to make a social networking
Takahe
Social NetworksMulti-domain ActivityPub server
Replaces Twitter, Mastodon
NeoDB
Social NetworksFederated catalog for books, movies, music, and games
Replaces Goodreads, Letterboxd
Hometown
Social NetworksMastodon fork with local-only posting
Replaces Twitter, Mastodon
Glitch-soc
Social NetworksCommunity-maintained Mastodon fork with extra features
Replaces Twitter, Mastodon
Enigma 1/2 BBS
Social NetworksEnigma 1/2 is a modern, multi-platform BBS engine with unlimited
Chirpy
Social NetworksPrivacy-friendly and customizable Disqus (comment system) alternate
kbin
Social NetworksFederated content aggregator and microblog
Replaces Reddit
Sharkey
Social NetworksFeature-rich Misskey fork for the fediverse
Replaces Twitter, Mastodon
ActivityPub for WordPress
Social NetworksTurn a WordPress blog into a fediverse actor
Replaces Twitter, Medium
Smithereen
Social NetworksFederated social network with a familiar layout
Replaces Facebook, VK
Snikket
Social NetworksEasy self-hosted XMPP chat for groups
Replaces WhatsApp, Signal
Loops
Social NetworksFederated short video sharing platform
Replaces Instagram, TikTok
Libremdb
Social NetworksFree & open source IMDb front-end
Replaces IMDb
Mbin
Social NetworksCommunity-driven fork of the kbin aggregator
Replaces Reddit
Trustroots
Social NetworksSelf-hostable hospitality exchange community platform
Replaces Couchsurfing
Akkoma
Social NetworksFeature-rich fediverse server forked from Pleroma
Replaces Twitter, Tumblr
Gancio
Social NetworksShared agenda and event platform for local communities
Replaces Facebook Events, Meetup
Socialhome
Social NetworksFederated personal social home pages
Replaces Tumblr, Facebook
Hubzilla
Social NetworksDecentralized identity and social platform
Replaces Facebook, Google+
Epicyon
Social NetworksMinimalist ActivityPub server for the fediverse
Replaces Twitter, Mastodon
Iceshrimp
Social NetworksLightweight Misskey-derived fediverse server
Replaces Twitter, Mastodon
Wafrn
Social NetworksTumblr-style federated social network
Replaces Tumblr, Twitter
Hatsu
Social NetworksBridge that interacts with Fediverse on behalf of your static site
BuddyPress
Social NetworksTurn WordPress into a social network
Replaces Ning, Mighty Networks
Friendiqa Hub
Social NetworksFederated photo gallery and social timeline
Replaces Instagram, Flickr
Fedibird
Social NetworksFeature-rich Mastodon fork for advanced users
Replaces Twitter
Streams
Social NetworksDecentralized social server with nomadic identity
Replaces Facebook, Mastodon
Enafore
Social NetworksFediverse client with better support for Akkoma, glitch-soc, and
Replaces Elk, Masto-FE
Sublinks
Social NetworksReddit-style federated link aggregator backend
Replaces Reddit
Buddycloud
Social NetworksFederated XMPP-based social networking server
Replaces Facebook Groups
Zap
Social NetworksDecentralized social network with nomadic identity
Replaces Facebook, Twitter
Catodon
Social NetworksCommunity-driven fork of the Iceshrimp fediverse server
Replaces Twitter
Osada
Social NetworksActivityPub social server with nomadic features
Replaces Facebook, Twitter
Forte
Social Networksopen source ActivityPub/fediverse server
Replaces Facebook, Threads
GoToSocial
Social NetworksFast ActivityPub social network server
Replaces Akkoma, Bluesky
Masto-FE (🦥 flavour)
Social NetworksMastodon-like interface for GoToSocial, based on IceShrimp's Masto-FE
Replaces Elk, Phanpy
PeerTube search-index
Social NetworksSearch engine for PeerTube videos and channels
yarn.social
Social NetworksSelf-Hosted, Twitter™-like Decentralised micro-logging platform
AsmBB
Social NetworksFast, SQLite-powered forum engine written in ASM
Iceshrimp.NET
Social NetworksFederated microblogging server that communicates over ActivityPub
No apps match these filters.
Every option here is open-source and self-hostable, tagged Multi-User within the social networks category. Compare them on the individual app pages for setup difficulty and resource requirements.