BlockUI

BlockUI is an XML-based Minecraft UI management system with a backing “Window” class for callbacks and data supply. Its tools include images, buttons, text input, scrolling and DragScreens. Available for Forge and NeoForge, it supports Minecraft 1.19.2–1.21.1.

Rent your own Minecraft server and install BlockUI with one click from the panel to use the UI library found in projects such as Structurize and MineColonies.