I want to have discussion site like SO for another purpose.
IS source of SO like sites https://meta.stackexchange.com/questions/4/list-of-stackexchange-sites free?
From where i can download, can i use on any site for any purpose free.
Meta Stack Exchange is a question and answer site for meta-discussion of the Stack Exchange family of Q&A websites. It only takes a minute to sign up.
Sign up to join this communityI want to have discussion site like SO for another purpose.
IS source of SO like sites https://meta.stackexchange.com/questions/4/list-of-stackexchange-sites free?
From where i can download, can i use on any site for any purpose free.
No, StackExchange and StackOverflow are not open-source software. However, you can pay a fee to use the stackexchange software on your own site1.
Alternatively, google for "open-source stackoverflow clone", which should give you a free alternative.
1 Apparently, stackexchange offers the first 45 days free as a trial
You should see the list of SO clones, some of which are open source, developed on the language the OP liked the most (Python, Ruby, PHP, ASP.Net).
You cannot download the source. Those sites are hosted by the Stack Exchange platform.