BuildCraft

BuildCraft is a mod that uses machines to mine resources, craft items, and sort goods. It also has machines that can automatically build structures based on blueprints. Three types of BuildCraft engines power these machines, the most advanced of which is the combustion engine. This engine can consume lava to produce energy, but Buildcraft introduces two new liquids, oil and fuel, to provide increased energy output. The Buildcraft Wrench is a new tool to reorient machines and piping systems.

Getting Started with BuildCraft
If you're new to the mod check out the Getting Started with BuildCraft Guide

Mining and Extracting

 * Pump
 * Mining Well
 * Quarry
 * Refinery

Crafting

 * Advanced Crafting Table
 * Autocrafting Table
 * Assembly Table
 * Laser

Building

 * Architect Table
 * Blueprint Library
 * Builder
 * Filler

Engines
BuildCraft engines are the primary sources of energy that power the machines. The hopper is an engine add-on that allows extra fuel to be stored and dropped into the engine as necessary.
 * Redstone Engine
 * Stirling Engine
 * Combustion Engine

Pipes

 * Main articles: Transport Pipe and Waterproof Pipe

Transport Pipes transport items from machines or chests in a variety of ways. Waterproof Pipes transport all kinds of liquids.
 * Wooden Transport Pipe
 * Cobblestone Transport Pipe
 * Stone Transport Pipe
 * Iron Transport Pipe
 * Golden Transport Pipe
 * Diamond Transport Pipe
 * Obsidian Transport Pipe
 * Void Transport Pipe
 * Sandstone Transport Pipe

Pipe Modifications

 * Conductive Pipe
 * Pipe Facades
 * Structure Pipe
 * Waterproof Pipe

Liquids

 * Oil
 * Fuel