Lava Decay

Supports Minecraft 1.2.5, 1.3.1, 1.3.2, 1.4.2, 1.4.6, 1.4.7

Makes lava decay as if it was water.

FPS++

Supports Minecraft 1.2.5, 1.3.1, 1.3.2, 1.4.2, 1.4.6, 1.4.7, 1.5

Increase your FPS by messing with Minecraft's Cos and Sin functions. It shrinks the lookup table down to a more reasonable size.

No Infinite Water

Supports Minecraft 1.2.5, 1.3.1, 1.3.2, 1.4.2, 1.4.6, 1.4.7

Water does not create a water source when surrounded by two other water sources.

Fog Key

Supports Minecraft 1.3.1, 1.3.2, 1.4.2, 1.4.6, 1.4.7, 1.5

Adds the Fog/Render distance keybinding back in.

Village Biomes

Supports Minecraft 1.2.5, 1.3.1, 1.3.2

Allows you to select which biomes villages spawn in