2007/2/2, aretai aretai aretaiuc@gmail.com:
There is a note: // Copyright (C) 2007, Benner Sistemas. The program is under GPL though.
Is it possible to use it in a corporate environment?
Sure. It was developed inside of a corporate environment and released to the community in the hope of getting some review and feedback. The copyright remains to the original company, but with a license to do almost everything with the source code.
The GPL license is very permissive. MediaWiki is under the same license, so the extension can be used wherever MediaWiki can. I think it is fitting.
What you can't do with this license is to incorporate it in a commercial product and sell it without releasing the source code.
If anybody needs another kind of license that could also be arranged.