Top pick
Discussion platform for communities with moderation and plugins.
forumcommunity
Browse & filter
Filter by platform, license text, maturity, maintenance cadence, and editorial tags like privacy-focused or self-hosted. Search matches names, summaries, tags, and use cases.
4 tools match your filters
Honorable mention
Deliberately simple forum software with extension ecosystem.
forumphp
Also strong
Link-aggregator and forum software using ActivityPub federation.
activitypubforumfederation
Honorable mention
Node.js forum with realtime sockets and theming.
forumnodejs