Iceberg [Fabric]

Iceberg [Fabric] is a library for other mods on Fabric and Quilt, Minecraft 1.18 - 26.3. It provides new events, helpers and utilities that make modders' lives easier, and works on both the client and the server.

It doesn't do anything by itself, but mods built on it need it present. When one of those lands on your Minecraft server, add Iceberg next to it in one click from the panel.