Hola! I just released a public version of my XNA based 2d game framework and example projects. It's done with C# and should be totally monogame compatible.

Documentation is still under works, but check out the sample projects for more info. The Framework itself is mostly documented (but needs improvement).

It provides atleast

- State management

- Sprites, animated and not

- Buttons, Menuentries

- Parallax Backgrounds

- Input management

- Physics through Farseer Physics Library

- etc.

Go dig if you want. Check out the SmithShooter example project (VS2010 and 2012 projects available)...

It's here: http://blog.codesmith.fi/2013/04/smithngine-0200-released-includes.html

Thanks

-erno

It's now available in BitBucket and GitHub.

The git checkout URLs are here directly

git@github.com:codesmith-fi/smithngine.git
https://github.com/codesmith-fi/smithngine.git

BitBucket Git checkout URLs are:

git@bitbucket.org:codesmith/smithngine.git
https://bitbucket.org/codesmith/smithngine.git

Check it out, I need feedback. And please remember, its now MIT and open source! :)

-erno