Omni Tools is designed to help players that have installed various mods. It provides a wrench which works on BuildCraft, IndustrialCraft 2, Modular Force Field System, Railcraft, Forestry, MineFactory Reloaded, Universal Electricity, Thermal Expansion, and standard Minecraft blocks.

Also, the Forge Lexicon is added, which assists players to convert equivalent items from one mod to another. For example, a copper ingot from IndustrialCraft 2 can be converted into a copper ingot from Forestry, or a copper ingot from Universal Electricity.

However, this mod is useless if players have installed mods which do not require the conversion of items (such as ore and/or ingots), as well as the use of the wrench.