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OpenUI MC project artwork

CurseForge · Minecraft mod

OpenUI MC

A reusable, declarative, and reactive UI framework for Minecraft mods.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which OpenUI MC release should I use?

Updated today
Latest stable file OpenUI MC 0.0.9 - NeoForge 1.21.1
Game version 1.21.1
Loader NeoForge

OpenUI MC 0.0.9 - NeoForge 1.21.1 targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.

Where it goes

Is OpenUI MC required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say
Dedicated server Source doesn’t say
Loader for this release NeoForge
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does OpenUI MC 0.0.9 - NeoForge 1.21.1 need?

OpenUI MC 0.0.9 - NeoForge 1.21.1. Change the file and its required mods may change too.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add OpenUI MC without breaking your instance.

Built for OpenUI MC 0.0.9 - NeoForge 1.21.1. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use OpenUI MC 0.0.9 - NeoForge 1.21.1. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.

  2. 02

    Bring the mods it needs

    This file does not list any required mods. Do not add a library just because a different file uses it.

  3. 03

    Put it on the correct side

    The project page does not say whether this file belongs on the client, dedicated server, or both.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside OpenUI MC 0.0.9 - NeoForge 1.21.1. It opens that exact file at the source.

About this project

What does OpenUI MC add?

OpenUI MC

OpenUI MC is a client-side UI framework used by Minecraft mod developers to build polished, reactive screens without rewriting focus, input routing, layout, animation, and widget lifecycle plumbing.

OpenUI MC logo

For players

OpenUI MC is a library mod. It does not add blocks, items, recipes, or gameplay by itself. Install it when another mod lists OpenUI MC as a required dependency, and make sure the Minecraft version and loader match that mod.

For mod developers

  • Declarative rows, columns, stacks, padding, clipping, responsive layouts, grids, and virtual lists
  • Reactive signals, computed values, effects, batching, remembered state, and async state
  • Buttons, text fields, toggles, sliders, selects, tabs, tables, charts, forms, and validation
  • Managed focus, keyboard navigation, pointer capture, drag and drop, and native Minecraft widgets
  • Dialogs, popovers, menus, tooltips, toasts, command palettes, and layered overlays
  • Themes, animations, navigation, error boundaries, and UI inspection tools
  • Base classes for ordinary screens and menu/container screens

OpenUI MC keeps application code focused on state and business callbacks while its runtime mounts components, computes layout, renders, dispatches input, owns focus, and cleans up resources.

Supported platforms

Minecraft Loader Required Java
1.20.1 Fabric 17
1.20.1 Forge 17
1.21.1 Fabric 21
1.21.1 NeoForge 21
26.1.2 NeoForge 25

Download the file matching both your Minecraft version and loader. Builds are client-side and are not interchangeable between Minecraft generations.

Developer documentation

Important 26.1.2 note

Minecraft 26.1.2 uses its extracted GUI render-state API. OpenUI supports that API, but FadeTransition is unavailable because Minecraft no longer exposes a safe scoped opacity operation for arbitrary UI subtrees. Slide and scale transitions remain available.

Support and license

Report bugs and compatibility problems on the GitHub issue tracker. Include the Minecraft version, loader, OpenUI version, and the consuming mod.

OpenUI MC is authored by NsTut and distributed under the MIT License.

Project description from CurseForge.

Pick your setup

OpenUI MC by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

5 available setups

Check the dependencies, then try the file in a copied instance before changing a world you care about.

Recent files

OpenUI MC versions and loaders

45 of 45 releases match

Looking for an older file? The official CurseForge project page is in Resources.

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