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Pretty Pipes: Fluids
Primitive Crafting
Project Red
ProjectE
Proportional Destruction Particles
Railcraft
Ranged Pumps
Real Filing Cabinet
ReAuth
Reborn Storage
RecipeStages
Redstone Flux
Refined Storage
Refined Storage: Requestify
Resource Hogs
Resource Loader
RFTools
RFTools Power
RFTools Storage
RFTools Utility
RFToolsPower
Rustic
Sandbox
Shadowfacts' Forgelin
Simple Generators
Simple Inventory sorting
Simple Magnets
Simple Storage Network
Simply Jetpacks
Simply Light