The essential mod for dungeons and creating dungeons.
Store your stuff in the END
Many new epic storage options
Monitor and control your IC2XP nuclear reactors
Many more items for use with BC3/4and RP2
Epic new forcefields.
Better Machines for IC2
Adds many new weapons, including a MUSKET
Produce innovative RF to triple ores and do other cool things.
One of the best mods of all time. Use EU to do awesome things.
Totally OP power generators
Alchemy for pros.
Process your ores to the extremes and use the lack of interfaces to your advantage + even CRAFTING doesn't need an interface with the compression crafter
The latest magic can be used to CONQUER THE WORLD!
Or if you are playing 1.6.4, use ProjRed instead
Customize your carts
The original pipe mod
Many new utilities for BC
Applying energy for the use of being awesome.