LightningCraft by SBlectric
Harnessing the raw power of lightning to make machines, tools, and more to shape the world to your whim
Lights 'n Lures by Bluerthestone
Adds various lighting options as well as special lights to attract/repel various mobs.
Liketechnik's Tinker Tweaks by boni, liketechnik
A small mod that gives your tools XP and awards random modifiers applied to your tools on levelup