Graphic Libraries for 2D (No XNA please)

2d, c#, graphics

Solution

OpenTK or TaoFramework.

There are a lot of tutorials. One of them can be found here.

Problem

Since Microsoft are dropping XNA (and yes, I know that one can still use it quite successfully, but the fact it's not being developed after only a short period of existence speaks volumes). What are the best C# graphic libraries for simple 2D development (akin to Allegro, SFML, SDL and the likes)? By the best I mean those under active development, with an active community, and hopefully with some decent tutorials. I tried searching for an answer but, one way or another, it's XNA that always comes up (maybe for a reason...) Thank you!

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