There is a GPL image editor called MyPaint; http://mypaint.intilinux.com/, it's a fairly small program (10~ MB, source 40~ MB), and is wrtten in C, C++ and Python.
I'd like to have this program converted (either from source or compiled - whichever is easier) into JS/HTML5 to be used online like Pixlr.com and Sta.sh/Muro
I know about Emscripten; https://github.com/kripken/emscripten/wiki, and from what I understand, it could make the conversion process much easier and without rewriting the code, so if you perhaps are familiar with it or even if you're not - maybe you can still use it...
MyPaint source/installers can be downloaded here: http://mypaint.intilinux.com/?page_id=6
Emscripten info/files: https://github.com/kripken/emscripten/wiki
Please tell me whether you need more details.
Thank you very much!