Tools For Super Quick Game Development

If you want to participate in game jams, competitions like Ludum Dare and the Seven Days Roguelike Challenge or simply make games fast, here are a couple of tools I found really useful:

• FlashDevelop(IDE)
• Flixel(game engine/library) and the Flixel Power Tools
• Ogmo Editor(a tile-map level editor)
• The Gimp(I use it for pixel-graphics but it's a general purpose image editor)
• BFXR(sounds effects generator)
• Wolfram Tones inudge(music generator)

What do you use for rapid game making?

-Ido.

EDIT:

• Tip from ratking: inudge (another music generator)
• Tips from deskwater: OpenGameArt and OpenClipArt