Discourse
Advanced forum / community solution based on Ruby and JS.
Discourse provides a self‑hostable, open‑source platform for building online forums and community sites. The system combines a Ruby on Rails back‑end API with an Ember.js front‑end, storing data in PostgreSQL and using Redis for caching and transient data. It supports modern browsers on desktop, tablet, and mobile devices, and can be installed via Docker, development containers, or native setups on macOS, Ubuntu/Debian, and Windows.
The platform offers discussion topics, real‑time chat, them selection, and an extensible plugin architecture that includes AI‑powered chatbots and data‑exploration tools. Users can up‑vote posts, mark accepted answers, and organize content with categories and tags. Official hosting is available, but the core software remains free under the GPL‑2.0 license, with no subscription requirement.
Discourse targets organizations and groups that need a customizable, scalable community solution while retaining full control over data and infrastructure. It is used by thousands of communities worldwide for support hubs, product feedback, developer collaboration, and internal team communication.
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