GeckoLib is a Minecraft Java Edition mod that provides a 3D animation library for various elements in the game, including entities, blocks, items, and armor. This mod is intended for developers who want to create custom animations in their own mods.
To use GeckoLib, it can be loaded with various loaders such as Fabric, Forge, NeoForge, or Quilt, on both the client and server side, and is categorized as a library-api, indicating it is used as a dependency by other mods.