QuantumLauncher

A simple, powerful, open-source Minecraft launcher with instance management, modding features, and more!

Main page of launcher, sidebar to select instances, and various options

Incredibly Lightweight

Uses minimal CPU and RAM!
Lighter than the vanilla launcher, common alternatives and even Task Manager!

System Monitor showing launcher using 39 MB RAM and 3% CPU

Easy Modding

Download and manage your mods and mod-loaders at one place!

Viewing list of installed mods, with buttons to manage them

Browsing the built-in mod store, options to change backends (CurseForge/Modrinth) and content (Mods/Resource Packs/Shaders/Modpacks)

Minecraft with RLCraft modpack launched by QuantumLauncher

Downloads

Windows 64-bit _{(Recommended)}

Windows ARM_(Snapdragon)

Windows 32-bit

macOS ARM _{(Apple M1/M2/M...)}

macOS Intel _{(before 2020-ish)}

Not sure which one you have? Click

→ About This Mac

NOTE: On macOS, if you have a "corrupted", "damaged" or "unverified" error, run this in the terminal.
_{Apple unfortunately demands a $99/year fee to make my app "verified" (more info)}

xattr -rc /Applications/quantum-launcher.app

Or, use Homebrew to install:

brew install hitblast/tap/quantum-launcher

Linux x86_64 _{(Recommended)}

Linux aarch64 _{(Asahi/Snapdragon/Raspberry Pi)}

Linux armv7h 32-bit _{(old Raspberry Pi)}

Or install it as a flatpak

flatpak remote-add --if-not-exists quantumlauncher https://mrmayman.github.io/ql-flatpak-remote/quantumlauncher.flatpakrepo
flatpak install io.github.Mrmayman.QuantumLauncher

Note: If you installed our flatpak before 13th October 2026, you may need to migrate

We have now moved to an OSTree-based flatpak repo. To migrate:

flatpak uninstall io.github.Mrmayman.QuantumLauncher

flatpak remote-delete quantum-launcher

flatpak remote-add --if-not-exists quantumlauncher https://mrmayman.github.io/ql-flatpak-remote/quantumlauncher.flatpakrepo

flatpak install io.github.Mrmayman.QuantumLauncher

Or install it as a Fedora COPR

sudo dnf copr enable apicalshark/quantum-launcher-rpm
sudo dnf in quantum-launcher