BlockUI
Java mod listed for Minecraft 1.17–1.21. File opened and checked on 30 Sep 2026; downloads from the MC Java Mods app on Android.
I don't know my version or loader
BlockUI is an XML based UI management system for minecraft. Defines the structure for the UI inside an XML while providing a backing "Window" class that is used to handle callbacks and data supply.
It has been used in numerous past projects like Structurize and MineColonies and is now also used in projects like StorageRacks and MultiPiston.
It is continuously updated and supports a broad selection of UI tools:
- Images
- Buttons and Button Handlers
- Text Input
- Scroll and DragScreens
- And more.
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- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.1, 1.20.1, 1.21
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as blockui-1.17.1-0.0.20-ALPHA.jar — drop this file into the mods folder
- Download size: 171 KB
- Download link checked 24 Oct 2026 — working
These come from our own check of the pack file, not from the source page.
