Best Self-hosted Forums & Discussion Boards tools in 2026
25 self-hosted open source alternatives in this category
See also:
Comments & Community WidgetsCommunity Events & Conference ManagementFederated Social NetworksFeedback, Voting & RoadmapsModeration & Anti-Spam ToolsQ&A / Knowledge Communities25 services found
Discourse
Modern discussion forum and community platform
Discourse is open-source forum software for community discussion, support, and knowledge sharing, with moderation tools, customization, and built-in chat.
Lila (lichess.org)
Online chess server for real-time play, analysis, and tournaments
Lila is the open source server behind lichess.org, providing real-time chess, puzzles, analysis, tournaments, teams, and community features via web and mobile clients.
Flarum
Open-source PHP forum software for building communities
Lightweight, extensible forum platform built in PHP with a Mithril.js frontend, supporting MySQL/MariaDB/PostgreSQL/SQLite and an active extensions ecosystem.
Apache Answer
Open-source Q&A platform for communities, teams, and support
Apache Answer is an open-source Q&A platform for community forums, help centers, and internal knowledge sharing with tagging, voting, and a plugin system.
NodeBB
Modern Node.js-based forum and community discussion platform
NodeBB is a modern forum platform with real-time discussions, built-in chat, SSO options, plugins, and flexible theming, backed by Redis, MongoDB, or PostgreSQL.
Lemmy
Federated link aggregator and discussion forum platform
Lemmy is a federated, self-hostable link aggregator and forum platform for creating Reddit-like communities with voting, comments, moderation tools, and ActivityPub feder...
HumHub
Modular social network and intranet platform for organizations
Open-source intranet and enterprise social network for communication, collaboration, and knowledge sharing with a modular, extensible design.
Misago
Modern forum software built with Django and React
Misago is a modern, fast forum application built with Python, Django, and React, featuring moderation tools, permissions, private threads, polls, and API integrations.
Loomio
Collaborative decision-making and voting app for groups
Loomio is a collaborative decision-making tool for group discussions, proposals, and polls, helping teams make transparent decisions asynchronously with a clear record.
phpBB
Open-source bulletin board and forum software
phpBB is an open-source forum (bulletin board) platform in PHP for building and managing community discussion boards with extensible theming and add-ons.
RetroShare
Friend-to-friend encrypted communication and file sharing platform
RetroShare is a decentralized friend-to-friend platform for encrypted chat, mail, forums, channels and secure file sharing, with optional Tor/I2P support.
Talkyard
Discussion platform combining Q&A, forums, chat, and embedded comments
Self-hostable community discussion platform combining Q&A, forums, team chat, ideation/upvoting, and Disqus-style embedded blog comments.
Multi Theft Auto: San Andreas (MTA:SA)
Open-source multiplayer engine and mod for GTA: San Andreas
Open-source multiplayer modification and engine for Grand Theft Auto: San Andreas that adds synchronized networking, Lua scripting, resource-based content, and a server b...
Elgg
Open source social networking engine built in PHP and MySQL.
Elgg is a modular open source platform for building social networks and collaborative communities with plugin-based extensions.
MyBB
Free, open-source forum software for managing online communities
MyBB is a PHP-based, open-source forum platform with plugins, themes, moderation tools, private messaging and multi-database support.
Scoold
Stack Overflow-style Q&A platform for teams and organizations
Open source Stack Overflow clone for teams: Q&A, knowledge sharing, search, spaces, reputation, webhooks, and integrations via a Para backend.
Simple Machines Forum
Free, open-source PHP forum software with multiple database backends.
Open-source PHP forum software supporting MySQL, PostgreSQL, or SQLite with a modular package system and rich moderation features.
Posio
Multiplayer geography game with real-time WebSocket gameplay
Posio is a multiplayer geography game with real-time WebSocket rounds, map-based guessing, and multiple game modes built on Django, GeoDjango, and Channels.
ENiGMA½ BBS
Modern multi-protocol BBS software written in Node.js
Modern Node.js-based BBS server with Telnet/SSH/WebSocket access, theming and mods, message networks, file areas, doors, and strong authentication options.
Mbin
Federated content aggregator and discussion/microblogging platform
Mbin is a federated content aggregator offering voting, discussion and microblogging via ActivityPub. A community-focused fork of kbin, built with PHP and Symfony.
Lurker
Self-hosted, read-only Reddit web client optimized for mobile
Lurker is a self-hosted, read-only Reddit client with a mobile-first UI, minimal JavaScript, sqlite storage and account/invite subscription management.
Storyden
Modern, extensible forum, wiki and community platform
A modern forum, wiki, and community hub for discussions, curated lists, and knowledgebases. Extensible, secure platform built with TypeScript and Go.
Eddrit
Lightweight alternative frontend for Reddit
A compact, privacy-minded read-only frontend for Reddit with mobile-friendly UI, RSS support, and easy self-hosting using Python and ASGI.
PieFed
Federated forum and link aggregator for the Fediverse
Open source ActivityPub-powered federated forum and link aggregator for running and joining community discussions across the Fediverse.
AsmBB
High-performance web forum engine written in assembly.
AsmBB is a lightweight, assembly-language web forum engine that runs via FastCGI and stores data in SQLite, designed for Linux servers and high performance.