GemCraft by Sanguine045
Ever think that emeralds are a vastly underimplemented part of the game? well here you go! this mod adds two more types or gemstone (sapphire and ruby) as well as full tool and armor sets for all three types of gem.
Thermal Shade by Ferreus Veritas
A small mod that patches the Thermal Dynamics implementation to work with ShadersModCore.
LagFix by Andre L Noel
An op tool to remove all Items or Mobs or Entities or TileEntities or Blocks within a distance of the op.