Open Source Community Apps
Find the best open source community software to connect your users, build engagement and foster collaboration. Explore platforms for forums, chat & more!
Apps in Community
Apache Answer
Community
Open-source Q&A platform for communities, help centers, and knowledge bases with AI assistant and plugin extensibility
Apache Answer
Apache 2.0ClearFlask
Product Management · Community
Open-source feedback management and roadmap tool that lets product teams collect, prioritize, and respond to user input — with AI-powered summarization and full self-hosting control.
ClearFlask
Apache 2.0Discourse
Community
Open-source community platform with dynamic trust levels, real-time chat, and a powerful plugin architecture for self-hosted forums.
Discourse
GPL 2.0Flarum
Community
Delightfully simple, extensible forum software built on PHP and Mithril — beautiful out of the box, powerful when you need it.
Flarum
MITForem
Community · Blogging
Open source Ruby on Rails platform for building developer communities with articles, discussions, and social profiles—the same software that powers dev.to.
Forem
AGPL 3.0Lemmy
Community · Social Media
Federated, self-hosted Reddit alternative with full community ownership and no corporate control.
Lemmy
AGPL 3.0lila (Lichess)
Community
The forever-free, ad-free, open-source chess server powering millions of real-time games, AI analysis, puzzles, and tournaments worldwide.
lila (Lichess)
AGPL 3.0NodeBB
Community
Modern Node.js forum software with real-time WebSockets, multi-database support, and a plugin ecosystem — the community platform built for the open web and the Fediverse.
NodeBB
GPL 3.0Spacebar
Team Chat · Community
A free, self-hostable Discord-compatible platform giving you full control over your chat, voice, and video community.
Spacebar
AGPL 3.0About Community
Online communities are essential for fostering collaboration, sharing knowledge, and providing support. Community platforms offer a centralized space for individuals with shared interests to interact and build meaningful connections.
These applications typically provide a range of features designed to facilitate engagement. Common functionality includes discussion forums, real-time chat capabilities, member directories, event calendars, and content sharing tools. More advanced platforms offer features like moderation tools, role-based access control, and integration with other communication channels.
Use cases for community platforms are diverse. They’re used by open source projects to manage contributors, support users, and gather feedback. Businesses utilize them for customer support forums, brand advocacy programs, and internal knowledge sharing. Non-profit organizations leverage communities to organize volunteers and engage supporters. Ultimately, these platforms solve the problem of fragmented communication and help build stronger relationships between people with common goals.
