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
Language
License
NodeBB
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.
Discourse
Community
Open-source community platform with dynamic trust levels, real-time chat, and a powerful plugin architecture for self-hosted forums.
Lemmy
Community · Social Media
Federated, self-hosted Reddit alternative with full community ownership and no corporate control.
lila (Lichess)
Community
The forever-free, ad-free, open-source chess server powering millions of real-time games, AI analysis, puzzles, and tournaments worldwide.
Apache Answer
Community
Open-source Q&A platform for communities, help centers, and knowledge bases with AI assistant and plugin extensibility
Forem
Blogging · Community
Open source Ruby on Rails platform for building developer communities with articles, discussions, and social profiles—the same software that powers dev.to.
ClearFlask
Community · Product Management
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.
Flarum
Community
Delightfully simple, extensible forum software built on PHP and Mithril — beautiful out of the box, powerful when you need it.
Spacebar
Community · Team Chat
A free, self-hostable Discord-compatible platform giving you full control over your chat, voice, and video community.
About 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.
