Ludum Dare Tools

New ones:
Unity3D 2D Tools

Old tools:

2D Tools for Unity3D

Three C# scripts, one for making quads, one for importing textures and one for UV based animation. An example texture to show how sprite should be placed is provided too.
Muu?'s LD 2D Tools ZIP (605 downloads)
Muu?'s LD 2D Tools UnityPackage (634 downloads)