Infinity Coins by aMUSiC
Aimed mostly for server admins who want to include an actual representation of currency in their server without too much hassle.
Infinity Mine by TheCombatCA, MrSheepCo, applebottem
Its so overpowered, Even Chuck Norris cant make it better!
Infinity Storage by LousyLynx
A fork of Refined Storage, to bring back a couple of key features from AE2.