Stack Overflow clones
I recently found Locker Gnome and I'm curious whether they're ripping off Stack Exchange, or are part of the Stack Exchange network?
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It's running on OSQA, which is GPL'd, Django-based Q&A software, which appears to have very closely followed the design of the Stack Exchange sites.
It isn't affiliated with Stack Exchange (nor does it claim to be), and it doesn't mention Stack Exchange at all that I can see.
They even have a site at http://meta.osqa.net so if you want to ask them directly that would be the place.
OSQA — which powers LockerGnome — basically started off as an attempt to fork Stack Exchange when Joel and Jeff blindsided everybody with the 2.0 announcements last year. The idea was, as much as they'd deny it, to provide a refuge for anyone disenfranchised by Joel and Jeff's way of doing things. Their remit has since changed but this does explain the virtually identical layout and text.
Disclaimer: I have nothing to do with OSQA, and didn't even know that it existed until about ten minutes ago. I just read this post.
Ahhh yes, I came across that site a few days ago. It does appear to be a direct rip-off of Stack Exchange. Including even the messages that come on top of the screen.
So the answer to your question is: Yes, someone is ripping off Stack Exchange.
The question really is: Is it breaking any laws? What is open for use, what isn't? Is there anything we can do about it? Should we want to do anything about it?