CurseForge · Minecraft mod
ModularUI
A GUI library to ease the process of creating vanilla style GUIs
Quick answer
Which ModularUI release matches 1.12.2 Forge?
ModularUI − 3.1.6 targets 1.12.2 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is ModularUI required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does ModularUI − 3.1.6 need?
ModularUI − 3.1.6 on 1.12.2 Forge. Every mod below is checked against that same setup.
Install MixinBooter first. We found matching files for this game-version and loader setup. 20 come through another mod in the chain.
20 extra mods were pulled in by other dependencies. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add ModularUI without breaking your instance.
Built for ModularUI − 3.1.6 on 1.12.2 Forge. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use ModularUI − 3.1.6. It targets 1.12.2 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install MixinBooter first. We found matching files for this game-version and loader setup. 20 come through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside ModularUI − 3.1.6. It opens that exact file at the source.
About this project
What does ModularUI add?
ModularUI
What is ModularUI?
ModularUI is a library for Minecraft aiming to make GUI's much easier.
Key features
- panel system similar to windows
- widgets are placed in a tree like structure
- widget rendering and interactions are automatically handled
- built in widgets like buttons, scroll views, item slots, fluid slots and text fields
- no need to create GUI texture sheets, each widget is rendered dynamically
- easy and dynamic widget sizing and positioning
- build in APIs for various UI things like color, stencil (fancy scissor) and animations
- easy syncing between client and server handled by MUI
- good for client only GUIs and client-server synced GUIs
- GUI themes are loaded via JSON and can be added and modified by resourcepacks
- recipe viewer compat for things like exclusion zones and ghost ingredients
Mod versions
- MUI begann as 1.0.0 in Minecraft 1.12.2
- A rewrite of core features was introduced in 2.0.0. MUI 1 and 2 are so fundamentally different, that every mod using it, is incompatible with the other version. I took McLib as an inspiration for this version.
- Years later, over many release candidates, version 3.0.0 was released. This change was much less drastic than 2.0.0, but was still very large. When people say "MUI2" they often mean 3.0.0 at this point in time.
Minecraft Versions
- 1.7.10 is maintained by the GTNH Team, which is where the repository can be found. Many big changes from my modern repository will not be back ported.
- 1.12.2 MUI was created in this version under the CleanroomMC org, this is no longer maintained.
- 1.20.1 and up is maintained at my own repository, by me and the GTCEM Team.
At this point in time, 1.20.1 is my main focus, but commits are forward ported to 1.21.1 by the GTCEM Team.
Need help?
For version 1.7.10 best place to ask is the GTNH discord.
Otherwise you can join the MUI discord. This is only meant for developers!
Project description from CurseForge.
Pick your setup
ModularUI by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
1 loader build1.12.2
1 loader build1.7.10
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
ModularUI versions and loaders
ModularUI − 3.1.6
modularui-3.1.6.jar
15 Apr 2026
ModularUI − 3.1.5
modularui-3.1.5.jar
19 Mar 2026
ModularUI − 3.1.4
modularui-3.1.4.jar
2 Mar 2026
ModularUI − 3.1.3
modularui-3.1.3.jar
14 Feb 2026
ModularUI − 3.1.2
modularui-3.1.2.jar
6 Feb 2026
ModularUI − 3.1.1
modularui-3.1.1.jar
5 Feb 2026
ModularUI − 3.1.0
modularui-3.1.0.jar
31 Jan 2026
ModularUI − 3.0.8
modularui-3.0.8.jar
7 Jan 2026
ModularUI − 3.0.7
modularui-3.0.7.jar
3 Jan 2026
ModularUI − 3.0.6
modularui-3.0.6.jar
11 Dec 2025
ModularUI − 3.0.5
modularui-3.0.5.jar
6 Dec 2025
ModularUI − 3.0.4
modularui-3.0.4.jar
9 Nov 2025
Looking for an older file? The official CurseForge project page is in Resources.
