Free mapping components for Windows Store Apps?

Question

I have been using opensource GIS and mapping components in my .net projects, like sharpmap, mapnik, brutile. I mainly used them in winforms applications, now I am looking for these kind of components for windows store ('Metro' style desktop) apps. Bing map control is not an option for me because of licensing issues.

Until now, I have not found any windows store app targeted mapping free components. Do you know any of them? Do you know an opensource project in this topic I can participate?

Answer 1

Finally I found a very promising one: http://xamlmapcontrol.codeplex.com