Crafting Tweaks
FastWorkbench
SmoothFont
VanillaFix
Born in a Barn
Stackie
TickDynamic
Not Enough IDs
Craft Tweaker 2
FTB Lib, FTB Utilities + Backups (friends list, area claims and creeper protection, chunk loading (shift+left click on claim area), etc)
Foam Fix (significantly improves performance)
Fast Leaf Decay
Chicken Chunks
Clumps
Morpheus
Gravestone
ReAuth
Nether Portal Fix
Instant Unify (automatically converts ore when it drops instead of having to edit every config and find all those pesky duplicate ore types - essential!!!)
UniDict
Bad Wither No Cookie
Controlling (search keybinds, find duplicates, etc)