FTB Library (Forge) (Legacy) is a Minecraft Java Edition mod that serves as a library for other mods. It is intended for use with certain mods created by FTB and FTBTeam. This mod provides functionality that is used by other mods, making it a useful tool for players who use these mods.
FTB Library (Forge) (Legacy) is used with the Forge loader and is required for certain mods to function properly. It can be used on both the client and server side, providing map information and server utility functions through its library API.