You can download the stable version from the website linked above, or from the Releases button

Or, you can compile the launcher to get the latest experimental version (with potentially broken and untested features). To compile the launcher:

git clone https://github.com/Mrmayman/quantumlauncher.git
cd quantum-launcher
cargo run --release

You can omit the --release flag for faster compile times, but slightly worse performance and MUCH larger build file size.

• QuantumLauncher provides a feature rich, flexible, simple and lightweight experience with plenty of modding features.

What about the others? Well...

• The official Minecraft launcher is slow, unstable, buggy and frustrating to use, with barely any modding features.
• Prism Launcher is a great launcher overall, but it does not support offline accounts. Same for MultiMC.
• Legacy Launcher isn't as feature rich as this
• TLauncher is suspected to be malware

• On Windows, the launcher files are at C:/Users/YOUR_USERNAME/AppData/Roaming/QuantumLauncher/.
• You probably won't see the AppData folder. Press Windows + R and paste this path, and hit enter.
• On Linux, the launcher files are at ~/.local/share/QuantumLauncher/. (~ refers to your home directory).
• Instances located at QuantumLauncher/instances/YOUR_INSTANCE/
• .minecraft located at YOUR_INSTANCE/.minecraft/.
• Launcher logs are located at QuantumLauncher/logs/.

• Instance creation, deletion, renaming, launching
• Java/Game args editing
• Memory allocation editing
• Optional Microsoft login
• Integration with Omniarchive, old version support
• Full controller, keyboard-navigation support in UI

• Fabric
• Forge
• Optifine
• Quilt
• Neoforge
• OptiForge
• OptiFabric
• Jar Mods

• Modrinth mods
• Curseforge mods
• Modrinth modpacks
• Curseforge modpacks

• Mod store
• Mod presets (packaging mods)
• Mod updater
• Make mod updater incrementally load in (optimization)
• UI/UX overhaul of preset system
• Category Filters in Mod store

• Import MultiMC/PrismLauncher instances
• Migrate from other launchers
• Package QuantumLauncher instances (in progress by @sreehari425)
• Upgrading instances to a newer Minecraft version

• Ability to create, delete and run Minecraft servers
• Editing basic server settings (RAM, Java, Args)
• Editing server.properties
• Editing any NBT config file
• Plugin store
• playit.gg integration

• Paper
• Spigot
• Bukkit
• Bungeecoord
• The stuff from MODS+PLUGINS.md

(note: WIP means work-in-progress)

• Windows x86_64

• Linux x86_64

• macOS x86_64 (WIP)

• Windows Aarch64 (WIP)

• Linux Aarch64 (Almost ready)

• Linux ARM32 (WIP)

• macOS Aarch64 (Almost ready)

• Windows i686 (WIP)

• Linux i686

• FreeBSD (WIP)

• Haiku

• Solaris

• Android (in the future)

• List installed instances list-instances, -l
• List versions available for download list-available-versions, -a
• Create instance from CLI
• Launch instance from CLI
• Install loaders from CLI
• Mod installation features from CLI
• Preset, modpack features from CLI

The MSRV is Rust 1.82.0. Any deviation from this is considered a bug, please report if found.

For more info, see CONTRIBUTING.md

For more info, see tests/README.md

A lot of this launcher's design, including the code for creating and launching the game, and installing forge, is inspired by https://github.com/alexivkin/minecraft-launcher/.

Nearly all of this launcher is licensed under the GNU General Public License v3, however there are a few exceptions (such as GitHub actions and assets). Visit the assets README for more information.

If you play the game in offline mode, it's at your own risk. I am not responsible for any issues caused. I recommend that you buy the game, but if you don't have the means, feel free to use this launcher as a last resort. If anyone has any issues/complaints, just open an issue in the repo.