Stack Overflow

stack overflow, part of stack exchange , is a free, community-driven, reputation-based q & a site for computer programmers.

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Quora

Quora.com is a question/answer service allowing users to pose questions that other users can answer, each question and answer can have comments, each users can write one individual answer and there can be a summary answer.

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Yahoo! Answers

Yahoo! Answers is a way to find and share information. You can ask questions on any topic, get answers from real people, and share your insights and experience.

Free Web

Askme

Startups get your queries answered by the World's Top Investors and Entrepreneurs. Startups + Investors +Entrepreneurs Connect.

Free Web

Solace

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

Free Open Source Mac OS X Windows Linux Web

Shrtct

Shrtct is a productivity tool for teams, providing in-context communication (chit chat free!) via Shrtct Hashes.

Free Personal Web

Bitfortip

Bitfortip offers a unique use case thanks to Bitcoin. Use Bitfortip to: Find a item (i.e. a dress ) that you saw on a magazine,website, Pinterest or Instagram and you don't know where to buy it online.

Free Android Web

Coordino

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

Free Open Source Linux Web Self-Hosted

QueryHome

QueryHome is a Knowledge Social Network for people to come together and ask technical doubts and contribute by answering questions, solving doubts and writing articles.

Free Open Source Android Android Tablet Web

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

Boardest

Boardest.com is a forum, question/answer and link sharing service allowing users to ask questions, open discussion threads and share links that other users can comment and contribute.

Free Web

Codecall

Programming forums.

Free Web

Tesse

Tesse is an expert search engine which allows you to search and connect with global experts by a keyword of skills or expertise. It is an on-demand platform for...

Free Android iPhone Web

asktopia

asktopia is a global network for business professionals to ask and answer questions about real world problems they need to solve or the “whys” and “hows” of specific...

Free Web

Curositi

Curositi is an online community of people having a passion for searching, researching, learning new things and acquiring knowledge.

Free Personal Web

AnswerCart

AnswerCart provide a community platform to the businesses which can be integrated with websites or mobile apps. Using community, users can engage in Q&A, blogging...

Commercial Web

NALIJ

Have great conversations with the right people. One forum for all your interests. Post about anything and everything you like! Whether you're an expert or a...

Free Web

Ihavesolved

I have solved is Question and Answer website. If you register, you can ask questions and give your answers.

Free Web

KosisaMay

Your Question Your Answer!

Free Web