Eris Solver
Free crowdsolver for complex problems.
15 Alternatives To Eris Solver
Askalot
Askalot is a next generation CQA (Community Question and Answer) system.
Askme
Startup Questions- Investor Answers
Coordino
Coordino allows you to create a question and answer system for you and your users to enjoy.
Fixoncloud
Interaction platform for programming enthusiasts, learners, and experts to solve problems.
Hypersay
Goodbye old slides. Hello interactions!
Kuora
Questions and answer platform.
LanceBase
Freelance community social center.
Mamute
A tool for community driven questions and answers.
OSQA
OSQA is the free, open source Q&A system you’ve been waiting for.
Quora
Quora is a place to gain and share knowledge. It’s a platform to ask questions and connect with people who contribute unique insights and quality answers.
Reddit
Reddit gives you the best of the internet in one place. Get a constantly updating feed of breaking news, fun stories, pics, memes, and videos just for you.
Stack Overflow
Community-based Q&A part of the Stack Exchange platform.
Tesse
Interactive search engine to find and connect with experts.
What If HQ
What If? HQ is a website where people can be curious and ask questions. What If? HQ is where no question is a bad question and everyone can share what they know.
Wiki Answers
Answers.com: Wiki Q&A combined with free online dictionary, thesaurus, and encyclopedias.