Apache Answer is an open-source Q&A platform for community forums, help centers, and internal knowledge sharing with tagging, voting, and a plugin system.
15.7k stars1.4k forksApache-2.0last commit Actively maintained
6 self-hosted Stack Exchange alternatives
A network of community-driven Q&A sites for asking and answering technical and professional questions. Provides reputation-based moderation, tagging, voting, accepted answers, searchable archives, and community-managed site governance and moderation tools.
Alternatives to Stack Exchange
Apache Answer is a modern open-source Q&A platform for teams to build knowledge bases, forums, and help centers.
15.7k stars1.4k forksApache-2.0last commit Actively maintained
#3
Self-hostable community discussion platform combining Q&A, forums, team chat, ideation/upvoting, and Disqus-style embedded blog comments.
1.8k stars129 forksAGPL-3.0last commit Actively maintained
#4
Open source Stack Overflow clone for teams: Q&A, knowledge sharing, search, spaces, reputation, webhooks, and integrations via a Para backend.
922 stars230 forksApache-2.0last commit Actively maintained
#5
QPixel is a Ruby on Rails Q&A platform powering Codidact, supporting multiple communities, categories, Markdown content, voting and activity-based privileges.
439 stars71 forksAGPL-3.0last commit Actively maintained
AnonymousOverflow is a lightweight Go service that proxies StackOverflow questions into a simplified, privacy-preserving, read-only interface served as server-side rendered HTML.
377 stars26 forksMPL-2.0last commit Actively maintained
What replacing Stack Exchange actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 6 of 6 shipped a commit in the last six months. Licences in this list: Apache-2.0, AGPL-3.0, MPL-2.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Q&A / Knowledge Communities.
