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Features

• Cross Platform: Supports Windows 10/11, macOS and Linux.
• Efficient Instance Management: Supports multiple game directories and instances, allowing the management of all instance resources (such as saves, mods, resource packs, shaders, screenshots, etc.) and settings in one place.
• Convenient Resource Download: Supports downloading game clients, mod loaders, various game resources and modpacks from CurseForge and Modrinth.
• Multi-Account System Support: Built-in Microsoft login and third-party authentication server support, compatible with the OAuth login process proposed by the Yggdrasil Connect proposal.
• Deeplink Integration: Integrates with external websites and tool collections, providing convenient features such as desktop shortcuts for launching instances through system deeplinks.

Note: some features may be limited by region, platform, or bundle type.

Built with

Getting Started

Getting started with SJMCL is simple, just download the latest release from the Official Website.

You can also find all the releases, including the nightly versions, on GitHub Releases.

SJMCL currently supports the following platforms:

Platform	Versions	Architectures	Provided Bundles
Windows	10 and above	aarch64, i686, x86_64	.msi, portable .exe
macOS	10.15 and above	aarch64, x86_64	.app, .dmg
Linux	webkit2gtk 4.1 (e.g., Ubuntu 22.04)	x86_64	.AppImage, .deb, .rpm, portable binary

To learn about how to use SJMCL’s features and browse frequently asked questions, please refer to the User Documentation.

Development and Contributing

To get started, clone the repository and install the required dependencies:

git clone [email protected]:UNIkeEN/SJMCL.git
npm install

To run the project in development mode:

npm run tauri dev

We warmly invite contributions from everyone.

• Before you get started, please take a moment to review our Contributing Guide (includes more details on the development workflow).
• API references and some developers’ insights can be found in the Developer Documentation.
• Feel free to share your ideas through Pull Requests or GitHub Issues.

Repo Activity

Copyright

Copyright © 2024-2025 SJMCL Team.

NOT AN OFFICIAL MINECRAFT SERVICE. NOT APPROVED BY OR ASSOCIATED WITH MOJANG OR MICROSOFT.

The software is distributed under GNU General Public License v3.0.

By GPLv3 License term 7, we require that when you distribute a modified version of the software, you must obey GPLv3 License as well as the following additional terms:

1. Use a different software name than SJMCL or SJMC Launcher;
2. Mark clearly in your repository README file, your distribution website or thread, Support documents, About Page in the software that your program is based on SJMCL and give out the url of the origin repository.
3. When your modifications to this software are limited solely to adding (without modifying or deleting) preset authentication servers (src-tauri/src/account/helpers/authlib_injector/constants.rs), the restrictions set forth in Clauses 1 above shall not apply. In this case, you may continue to compile and distribute the software under its original name.

Besides, per term of use of our website, when distributing a modified version of the software, please send version numbers with prefix (more than two letters, e.g. XX-0.0.1) to our statistics server unless your modifications meets Clauses 3 above.

Contact Us

QQ Group for SJMCL Users: 860851380

You can also send email to [email protected] if you want to contact us.

Community Partners

We sincerely thank the following organizations for their development and community support throughout the SJMCL project.