The Open University, based in the United Kingdom, has several free and open courses for learning Modern Languages. Currently, there are courses for learning and exploring the English, French, German and Spanish languages.
The courses on the site range from English Grammar in Context to German: Regionen, Traditionen und Geschichte, and consist of quite a lot of useful education materials, structured to flow as a "physical" university course.
Best of all, and indeed the reason it is called The Open University, the content on the site is empowered by Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales License. This means that you can share, copy, distribute, display and make derivative works of the courses as long as you give proper attribution, do not use it for commercial purposes and "share alike" (under the same license) any new changes or improvements.
In time, I hope to see many courses in the Modern Languages section of The Open University, as well as in the other sections of the site. Keep up the goods!
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