AlexIIL

Core module of BuildCraft, included in the main jar by default.

Pipes!

Energy module for BuildCraft

Heavily stripped down port of BuildCraft's "transport" module

Robotics module for BuildCraft.

Builders module.

Factory module for BuildCraft

Compatibility module for BuildCraft. NOT included in buildcraft in earlier versions (buildcraft-version.jar or buildcraft-version-main.jar), IS included in buildcraft-version-all.jar)

This adds the ability to customize the loading screen in minecraft through very detailed json files.

Silicon module for BuildCraft

Transport module for BuildCraft