I know StackOverflow is only public, but I'm looking for free open source software like StackOverflow.
The posts I found are really old ones or paid and charge too much for me like AnserHub and AnserBase I'm looking for something like http://www.mkyong.com/featured/top-5-open-source-qa-systems/ (These projects are old and not maintained).
I tried PhpBB but it is far different from StackOverflow.
Do you have a good Q&A or forum solution?
The features I would appreciate:
- Subscribe to tags by getting emails.
- Admin console.
- Add Images/ attach files.
- Open source.
- Large development community.