CreeperHost

R.O.A.R. The Root of All Automation. Really. by 6NGB

Adds the minimum set of machines to automate all that is vanilla Minecraft.

R0b0ts by PaleoCrafter, Din

Bringing modular robots to Minecraft!

RAND

This is an example mod

RCBlocks

RedCloud Official mod

RCS by StyleGame, MCreator

Bored of looking to chests to find the Name Tag or Sadle with Horse Armor to start the adventure? Now all changes!

RCSM

This mod makes your world have really cool stuff!

RCraft by rolandoislas

Adds useless gems and ingots.

RF Conduits by Tinkerlad

Conduits for transporting RF

RF Core Mod by ReisfresseDE

This is my Core Mod

RF Expansion by Funwayguy

Redstone Flux based tasks for Better Questing

RF Guns by GemOfEvan (ign: Victor31415)

Adds the RF Gun to the game plus upgrades!

RF Lasers by RaiderofRamen

Adds RF-powered mining lasers.

RF Lux by romelo333, McJty

Lights, lights, and more lights

RF Quarry by RaiderofRamen

A mod that adds rf powered mining lasers.