Zeta is a foundational library for modular Minecraft gameplay mods, reworking the original Quark module system and succeeding AutoRegLib. It adds no content of its own, so you only need it when another mod requires it. Available for Forge and NeoForge on Minecraft 1.20.1–1.21.1.
When a mod depends on Zeta, rent your own Minecraft server and install the library with one click from the server panel.