This is my first Ludum Dare, but I’ve competed in smaller ones before.

Main language will be Ruby, since it’s just so sweet. OpenGL  2D gfx with Gosu (http://libgosu.org).

Gosu is available for Ruby and C++. Good stuff.

On top of that I’ve worked on my own framework this summer called Chingu ( http://github.com/ippa/chingu/tree/master ) which builds on Gosu.

Chingu adds game states, easier input handling, animation, text and particle classes and a bunch of other useful stuff.

Graphics: Inkscape and probably TileStudio ( http://tilestudio.sourceforge.net ) for pixelart / animations.
Music: Reaper ( http://www.reaper.fm ) – amazing DAW. And a bunch of VSTs on top of that.
Soundeffects: most likely http://www.freesound.org/

I have no idea why I got doublespaces between some words. Tried editing with both latest firefox and latest IE and it behaved the same way :p.