Stack Exchange

Stack Exchange is a fast-growing network of 84 [and counting] question and answer sites on diverse topics from software programming to cooking to photography and gaming....

Free Web Android iPhone Android Tablet iPad

230 Like

Super User

Super User, part of Stack Exchange , is a Q&A site for computer enthusiasts that's free. Free to ask questions, free to...

Free Web

46 Like

Question2Answer

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...

Free Open Source Mac Windows Linux Web MySQL Community Edition ... Self-Hosted PHP

19 Like

Server Fault

Server Fault is a Q&A site for system administrators and IT professionals that's free. Free to ask questions, free to answer questions, free to read, free to...

Free Web

19 Like

OSQA

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...

Free Open Source Web Self-Hosted Python Django

12 Like

Solace

Solace is a fully open-sourced multilingual support and knowledge exchange platform written in Python.

• Discontinued Latest commit on Nov 29, 2009, see https://github.com/Plurk/Solace

Free Open Source Mac Windows Linux Web

Coordino

Coordino allows you to create a question and answer system for you and your users to enjoy. Whether you are looking to create a niche question and answer site for...

Free Open Source Linux Web Self-Hosted

Askalot

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

Free Open Source Self-Hosted

Experts Exchange

The Mission Our patented knowledge-sharing process, combined with the advantages of the Internet, allow us to change the way people solve their technology problems...

Commercial Web

4 Like