Open Source Self-Hosted Q&A Services

Ever had a question? Ever had an answer? Ever had knowledge to share? We believe that coming together to inquire and learn, to share knowledge and to teach each other, makes the world a better place. We also believe that Q&A communities should be free from the politics and...

Scoold is inspired by StackOverflow and implements most of its features. You can ask and answer questions, upvote and downvote posts, earn badges and reputation. Each edit creates an new revision, making it easy to follow the history of edits. Scoold is optimized for the cloud.

AnonymousOverflow allows you to view StackOverflow threads without the cluttered interface and exposing your IP address, browsing habits and other browser fingerprint data to StackOverflow.

A Q&A site helps an online community to share knowledge. No matter what your area of interest, people with questions can get super answers fast. Question2Answer is a popular Q&A solution.

Q&A platform software for teams at any scale. Whether it's a community forum, help center, or knowledge management platform, you can always count on Apache Answer.

Help each other — with the main features from StackOverflow, Discourse, Slack, Reddit, and Disqus.

OSQA is the free, open source Q&A system you've been waiting for. Your OSQA site is more than just an FAQ page, it is a full-featured Q&A community. Users earn points and badges for useful participation, and everyone in the community wins.

Askbot is a Q&A system, like StackOverflow, Yahoo Answers and some others. Askbot is based on code of CNPROG, originally created by Mike Chen and Sailing Cai and some code written for OSQA.

AnsPress is a sophisticated Q&A solution for WordPress that offers a wide range of features spanning use cases from support to issue tracking and forums, and of course, questions and answers. The core plugin and many extensions are free and open-source, with a few enhanced...

Claper turns your presentations into an interactive, engaging and exciting experience.

Mamut is a tool that allows to ask questions and give answers and comment on both. In addition users could vote for questions and answers and mark solved questions as such.

Coordino allows you to create a question and answer system for you and your users to enjoy.

A self-hosted Quora like web application written in Go.

Askalot is a next generation CQA (Community Question and Answer) system.