Feywild

GeckoLib

A 3D animation library for entities, blocks, items, armor, and more!

LibX

LibX is a library mod with a lot of code that is shared between mods.

Patchouli

Accessible, Data-Driven, Dependency-Free Documentation for Minecraft Modders and Pack Makers

Sand Box

A world generation library.

Quest Giver

Quest Giver provides the option for adding a data-driven quest system for modders and modpack makers.