PlasticCraft

Supports Minecraft 1.0.0, 1.1, b1.2_02, b1.5_01, b1.7.3

MineFactory Reloaded

Supports Minecraft 1.0.0, 1.1, 1.1.0, 1.10.2, 1.12.2, 1.2.3, 1.2.4, 1.2.5, 1.3.2, 1.4.4, 1.4.6, 1.4.7, 1.5.2, 1.6.2, 1.6.4, 1.7.10, b1.7.3, b1.8.1

MFR aims to automate a number of tasks that previously would be difficult, boring, or work-intensive. It also provides some additional support blocks and machines.

Timber!

Supports Minecraft 1.0.0, 1.1, 1.2.3, 1.2.5, 1.3.1, 1.3.2, 1.4.2, 1.4.4, 1.4.5, 1.4.6, 1.5.1, 1.5.2, 1.6.2, b1.7.2, b1.7_01, b1.8.1

The Timber Mod is a simple mod that allows for the destruction of a tree simply by removing the bottom block, which is closer to physics than the current method of destroying trees.