Alternatives to Question2Answer for all platforms with any license

Stack Overflow

Stack Overflow is the largest, most trusted online community for developers to learn, share? ?their programming ?knowledge, and build their careers.

Free Personal $ $ $ Web Android iPhone
Q&A Community based Keyword Research Knowledge base ... Point System Q&A Add a feature

429 Like
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
Q&A Add a feature

258 Like
Scoold

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...

Free Open Source Web Self-Hosted
LDAP Services SAML Single Sign-On Spaces Customer Feedback ... Forums Issue Tracking Knowledge base Knowledge Management Q&A Add a feature

11 Like
Hypersay

Hypersay is a platform for interactive presentations that massively increase engagement. Keep your audience engaged with polls, questions, private notes and live slide...

Free Personal $ $ $ Mac Windows Linux Web Android ... iPhone Chrome OS iPad
Real time collaboration Anonymity Automatic customer engagement Customer Feedback ... Embed subtitles into video Feedback Auto Follow up Mail Handwritten Notes Live Push Notifications Polling Private notes Q&A Session Analytics Add a feature

5 Like
Answers

Answers is the place to go to ask questions and receive answers from the community at large on any topic. Connect with people who know the answers to your questions...
- Answers is not a plugin/tool to create Q&A site. Guest • Mar 2019
Free iPhone
Community based Q&A Add a feature

7 Like
AskBot

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...

Freemium Open Source Web Self-Hosted Python Django
Forums Q&A Add a feature

13 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...
- Discontinued
  The last commit to its open source code (https://github.com/dzone/osqa) is dated 2015. The official website URL (www.osqa.net) redirects to the proprietary product Answer-Hub (https://devada.com/answerhub/). www.osqa.net also happens to be in a blacklist used by the uMatrix browser extension.
Free Open Source Web Self-Hosted Python Django
Q&A Add a feature

12 Like
Fixoncloud

Interaction platform for programming enthusiasts, learners, and experts to solve problems. Fast and inexpensive solutions to your programming problems. People with no...

Free Windows
Java Q&A Ruby Add a feature

4 Like
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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
Forums Q&A Add a feature

6 Like
Askalot

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

Free Open Source Self-Hosted
Q&A Add a feature

3 Like