Version 1.2.9i - Recommended
Applied Energistics - ME Networks provide:
Simple but robust automation tools, and great support for working with other other automation mods.
Includes a system which lets you create and use an automated crafting system.
Ways to include other storage from other mods or the vanilla game.
Lets you monitor your storage and trigger things via redstone.
Ways to alter your setup on redstone signal.
Save yourself a little time with wireless storage access.
The mod is designed to be a mid-to-late-game complement to less-realistic mods such as Thermal Expansion, Applied Energistics, and Minefactory Reloaded. These mods all offer fun ways to manipulate and "industrialize" your Minecraft world, and rely on a shared power framework.
My core design goal is to provide fun, engaging power systems that are "inspired by" real ones, while maintaining a light-hearted "video game" feel. It should be fun to set up your reactor, fun to modify it, and fun to figure out how to make it work the way you want: more power, less fuel consumption, or even a highly-automated sprawling mega-reactor should all be possible.
Further, the way I wanted the mod to work was to move away from big, heavy-weight UI systems. A reactor shouldn't be a series of toggles on a menu, or slots in an inventory! It should be a giant, humming, enormous machine that you build piece-by-piece. Every piece you add should change how the reactor works, so actually building it is fun.
Unofficially updated for 1.6.4 by Eximius88.
1) You don't need it installed client-side if you're playing in multiplayer
2) It doesn't use any item IDs or block IDs, so installing is just a case of dropping it into the mods folder
3) You'll rarely need to update it. Methods are all pulled from a remotely hosted configuration file in the github repository, so it'll regularly update without you needing to do anything
What does it do?
It turns various blocks within the game into peripherals, and exposes methods for you to call from the computer.
But that's not all ! Leveraging an extended NEI HUD, it is also capable of showing the name of blocks and mods ingame, right on top of your screen.
And if this is not enough, it comes with a few integrated modules to show internal information of some specific blocks. For now, BC tanks have been implemented (shows the content, capacity and amount of fluid) and IC2 machines (shows the In/out voltage).