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forum

6 catalogue entries use this topic; each Project's license policy is labeled separately.

Discourse

Discourse

Open-source community platform for discussion, chat, and support

Stars47.9K
Commitjust now
LicenseGPL-2.0

Discourse is a self-hosted community platform that combines threaded discussion with built-in chat, search, and moderation tools.

Alternative toSlackDiscord
Flarum

FlarumOpen

Free, open-source forum software with a rich extension ecosystem

Stars16.4K
Commit4d ago
LicenseMIT

Flarum is a free, MIT-licensed forum platform you install on your own PHP server and shape with community-built extensions.

Alternative toDiscourse
Apache Answer

Apache AnswerOpen

Open-source Q&A software for community forums and help centers

Stars15.7K
Commitjust now
LicenseApache-2.0

Apache Answer is a self-hosted, open-source Q&A platform for running community forums, help centers, and team knowledge bases.

Alternative toConfluence
NodeBB

NodeBBOpen

Real-time Node.js forum software for online communities

Stars15.2K
Commitjust now
LicenseGPL-3.0

NodeBB is a self-hosted, GPL-3.0 community forum platform built on Node.js with real-time chat, notifications, and federated sharing.

Alternative toFlarum
Lemmy

LemmyOpen

Federated link-aggregation and discussion platform for self-hosted communities

Stars14.6K
Commitjust now
LicenseAGPL-3.0

Lemmy is a federated link-aggregation and discussion platform where independent servers interoperate, so a person on one server can subscribe to communities, vote, and comment across any other. It works like a self-governed Reddit: communities host link and text posts with nested comments, votes surface widely endorsed items, and moderators set local rules with site-wide admin controls behind them.

Storyden

StorydenOpen

Open-source forum and shared library for lasting communities

Stars339
Commitjust now
LicenseMPL-2.0

Storyden is a self-hosted forum plus shared library for links, pages, and directories, deployed with Docker on your own server.

Alternative toDiscourse