Cyclic by Lothrazar
Random things that are useful and fun, including powerful items, inventory features, world generation, a few machines, gameplay tweaks, and more. See config to disable absolutely anything. Report issues to https://github.com/PrinceOfAmber/Cyclic/issues
MegaCorp by pkmnfrk
Have a lot of items laying around? Want to get into extensive automation for more than automation's sake? Using ProjectE and have more EMC than you know what to do with? Turn your extra items into liquid gold with your very own MegaCorp!
Useful tools to use with computers and turtles from Computer Craft.
Durability Viewer by Giselbaer
Creates a HUD that shows current item durability, arrow count, and inventory slots