Stack Overflow
Free
Stack Overflow is the largest online community for programmers to learn, share their knowledge, and advance their careers.
Stack Exchange
Free
Stack Exchange is a network of question-and-answer websites on topics in varied fields.
Super User
Free
Super User is a Q&A sites for system admins.
Server Fault
Free
Server Fault is a community QnA site about servers.
Reddit
Freemium
Reddit is an social news aggregation, web content rating, and discussion website.
Quora
Free
Quora is a question-and-answer site where questions are asked, answered, edited and organized by its community of users.
Slant
Free
Slant Community’s guides to all the best stuff.
OSQA
Open Source
OSQA (Open Source Question and Answer) is an open source question-answer system written in PythonLearn More with Django.
Compare Yahoo! Answers with alternatives
Compare Stack Overflow and Yahoo! Answers and decide which is most suitable for you.
Compare Reddit and Yahoo! Answers and decide which is most suitable for you.
Compare Stack Exchange and Yahoo! Answers and decide which is most suitable for you.
Compare Quora and Yahoo! Answers and decide which is most suitable for you.
Compare Super User and Yahoo! Answers and decide which is most suitable for you.
Compare Slant and Yahoo! Answers and decide which is most suitable for you.
Compare Server Fault and Yahoo! Answers and decide which is most suitable for you.
Compare OSQA and Yahoo! Answers and decide which is most suitable for you.