ModLoaderMP

Supports Minecraft 1.0.0, 1.1, 1.2.3, 1.2.4, 1.2.5, 1.3.1, 1.3.2, b1.1_02, b1.2_02, b1.3, b1.3_01, b1.4_01, b1.5_01, b1.6.4, b1.6.5, b1.6.6, b1.7.2, b1.7.3, b1.8.1, b1.9p5

Includes both the official versions from SDK and unofficial versions from Jamioflan. Old versions are also known as "Risugami's ModLoader (SDK'd)"

SDK's Mods

Supports Minecraft 1.1, 1.1.0, 1.2.3, 1.2.5, a1.2.3_04, a1.2.6, b1.2_02, b1.3_01, b1.4_01, b1.5_01, b1.6.6, b1.7.3, b1.8.1

A mod that adds in an arsenal of weapons and more!