Freedom251 › Minecraft Launchers
QuantumLauncher
What QuantumLauncher is
QuantumLauncher is a free, open-source Minecraft launcher for Linux, macOS and Windows. It manages separate game instances so versions remain isolated, and includes a built-in store for mods, mod loaders, resource packs, shaders and modpacks. The store offers CurseForge and Modrinth backends. Users can manage mods and loaders together or package and share mod collections with friends. The launcher supports multiple mod loaders, Java runtime management and automatic updates. Through Omniarchive, it can run older Minecraft versions, including rare versions, with skin and sound fixes. Offline mode is available, though the maker says using it is at the user's own risk. The maker describes the launcher as using minimal CPU and RAM and being lighter than the vanilla launcher and common alternatives. Stable downloads are available for each supported desktop platform, including Linux package options. The software is licensed under GNU GPL v3, while some assets have additional licensing. On macOS, the FAQ says the system may block the app because the maker cannot afford Apple's Developer ID fee and documents a terminal workaround. Issues and complaints can be raised in the GitHub repository.
Who it suits
QuantumLauncher suits Minecraft players who want to manage isolated game versions and install mods, modpacks or other add-ons from a built-in store. It also fits users who want Java runtime management or access to older versions.
What it does well
- Available for Linux, macOS and Windows.
- Keeps game versions in separate instances.
- Store connects to CurseForge and Modrinth.
- Includes Java runtime management and automatic updates.
- Supports older versions through Omniarchive.
What to know first
- Offline mode is at the user's own risk.
- macOS may block the app; a terminal workaround is documented.
- Some assets have additional licensing.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| QuantumLauncher | No paid plans or usage limits stated on the opened pages | Free |
As mrmayman.github.io lists them, read 11 Oct 2026. The maker's own page has the final word.
Getting started
- Open the QuantumLauncher website
- Download the stable build for Windows, macOS, or Linux
- Install the platform-specific package
- Create separate instances for the Minecraft versions you use
- Browse the built-in store through CurseForge or Modrinth
- Install desired mods, loaders, resource packs, shaders, or modpacks
Verdict
QuantumLauncher brings instance management, mod discovery and older-version support together in a free launcher. macOS users should be prepared for a documented terminal workaround if the system blocks the app.
Questions
How much does QuantumLauncher cost?
QuantumLauncher is free, with a listed price of $0. No paid plans or usage limits are stated.
Which operating systems are supported?
Stable downloads are offered for Linux, macOS, and Windows, including platform-specific builds and Linux package options.
Is QuantumLauncher open source?
Yes. The launcher is licensed under GNU GPL v3, while some assets have additional licensing.
Which mod sources does its store use?
The built-in store offers CurseForge and Modrinth backends.
Can it run older Minecraft versions?
Yes. QuantumLauncher uses Omniarchive for older versions, including rare versions and skin and sound fixes.
What happens on macOS if the app is blocked?
The FAQ says macOS may block the app because the maker cannot afford Apple’s Developer ID fee, and it documents a terminal workaround.
Facts from QuantumLauncher's own pages
- Automatic updates
- Yes · mrmayman.github.io, 22 Sept 2026
- Built-in modpack catalog
- Yes · mrmayman.github.io, 22 Sept 2026
- Downloads
- Stable downloads are offered for Windows, macOS, and Linux, including platform-specific builds and Linux package options. · mrmayman.github.io, 11 Oct 2026
- Instances
- Instances isolate game versions so they do not clash. · github.com, 11 Oct 2026
- Integrations
- The mod store offers CurseForge and Modrinth backends. · mrmayman.github.io, 11 Oct 2026
- Java runtime management
- Yes · mrmayman.github.io, 22 Sept 2026
- License
- The launcher is licensed under GNU GPL v3, with some assets under additional licensing. · github.com, 11 Oct 2026
- macOS limitation
- The FAQ says macOS may block the app because the maker cannot afford Apple's Developer ID fee and documents a terminal workaround. · mrmayman.github.io, 11 Oct 2026
- Mod loader support
- multiple · mrmayman.github.io, 22 Sept 2026
- Mod management
- Users can manage mods and mod loaders in one place and package and share mod collections with friends. · github.com, 11 Oct 2026
- Modpack import
- both · mrmayman.github.io, 22 Sept 2026
- Mod store
- Its built-in store lets users browse and install mods, mod loaders, resource packs, shaders, and modpacks. · mrmayman.github.io, 11 Oct 2026
- Offline mode
- The launcher supports offline mode, which the maker says is at the user's own risk. · github.com, 11 Oct 2026
- Older versions
- It supports older Minecraft versions through Omniarchive, including skin and sound fixes and rare versions. · github.com, 11 Oct 2026
- Performance
- The maker describes the launcher as using minimal CPU and RAM and being lighter than the vanilla launcher and common alternatives. · mrmayman.github.io, 11 Oct 2026
- Purpose
- QuantumLauncher is an open-source Minecraft launcher with instance management and modding features. · mrmayman.github.io, 11 Oct 2026
- Separate instances
- Yes · mrmayman.github.io, 22 Sept 2026
- Support
- The maker directs users with issues or complaints to open an issue in the GitHub repository. · github.com, 11 Oct 2026
Where QuantumLauncher stands on Freedom251
- Minecraft Launchers#26 of 76