A modern Minecraft launcher with multi-instance management, fast mod installation, account management, multiplayer support, and customizable themes. Fully open-source under GPL-3.0.
Overview
Qomicex Launcher (also known as QML Launcher) is a free, open-source launcher for Minecraft: Java Edition, built with Tauri and Rust. The goal is a launcher that starts quickly, uses few resources and offers a clean interface without sacrificing capability. The project is fully open source on GitHub under GPL-3.0, so anyone is free to use, review and redistribute it.
Rather than only launching the game, QML brings the tasks you repeat every day into one place: creating and isolating multiple instances, searching and installing mods and modpacks from Modrinth and CurseForge, resolving prerequisite dependencies automatically, storing and switching accounts securely, and playing together over EasyTier mesh networking. It also covers auxiliary work such as editing game options and world settings, previewing worlds, and rendering .litematic schematics.
In non-Chinese locales, signing in with a Microsoft account is required before third-party accounts can be added; this restriction exists to comply with platform licensing requirements. We recommend and prioritise signing in with a legitimate Microsoft account.
What it does
- Multi-instance management: per-instance Java, memory, window options and launch arguments, with version isolation, backup and restore.
- Game and loader installs: Minecraft from 1.6 through the latest release, plus Forge, Fabric, Quilt, NeoForge and OptiFine.
- Resource center: Modrinth and CurseForge integration with filtering by version, loader and category, dependency inspection, and direct install into a chosen instance.
- Account management: Microsoft, Yggdrasil (third-party login) and Unified Pass, with credentials encrypted locally and bound to the machine identifier.
- Multiplayer: EasyTier-based networking; join with a room code, no public IP or manual port forwarding required.
- Companion tools: graphical editing of game options and world settings, world map preview, and isometric schematic preview for
.litematicblueprints. - Updates: built-in update checks and installation, with separate stable and preview channels.
System Requirements
| Platform | Architecture | Min. Version | Package |
|---|---|---|---|
| Windows | x64, ARM64 | Windows 10 1809+ | .exe |
| macOS | x64, ARM64 | macOS 10.15+ | .dmg |
| Linux | x64, ARM64 | glibc 2.28+ | AppImage (LoongArch64, RISC-V 64 实验性) |
A working Java runtime is also required; the launcher can detect and install the Java version matching your target game version. Full details are on thedownload page.
Version Info
The latest stable release is 0.1.0-release1.0. See theversion history for every release and the changelog for itemised changes.
Open Source & Contributing
The project is open source under GPL-3.0. You are welcome to read the code, report problems and help improve it. Ways to contribute:
- Open an issue on GitHub to report a bug or suggest a feature; please attach the launcher log.
- Send a pull request for code or documentation improvements after reading the contribution notes in the repository.
- Before filing an issue, you may also find an answer in the FAQ or the documentation.
This is an independent third-party tool with no affiliation, sponsorship or endorsement from Mojang Studios, Microsoft Corporation or their affiliates. Minecraft is a trademark of Mojang AB. If you do not own a legitimate copy of the game, please purchase one through official channels.
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