I’m excited to be participating in Ludum Dare for the first time this weekend.

Language: JavaScript / HTML / CSS
Supporting frameworks: jquery.js, underscore.js, backbone.js, require.js, tween.js and modernizr.js
Pre-made classes: gameobject, engine, vector2, rectangle, circle and clock

Various Editors:

Text: Vim
Graphics: Photoshop
Sound: http://www.bfxr.net/