SynthLauncher is a free, open-source, feature-packed and lightweight Minecraft launcher.
- Modrinth and Curseforge support: SynthLauncher has full support for installing modpacks, mods, resourcepacks and shaderpacks from Modrinth and Curseforge.
- Optimized performance: SynthLauncher is designed to be fast, efficient, and lightweight.
- Open-Source: SynthLauncher is completely open-source, and open to contributors.
You can run SynthLauncher either via the Command Line Interface (CLI) or the Graphical User Interface (GUI).
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Open a terminal and navigate to the root directory of the project.
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Run the following command to build and start the CLI version:
cargo run
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After running, you should see output similar to this:
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To execute a command, run:
cargo run <COMMAND>
The GUI is built using a frontend framework managed by pnpm and Tauri.
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From the root directory, change to the frontend directory:
cd crates/sl-frontend -
Install dependencies:
pnpm install
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Run the development server with Tauri:
pnpm run tauri dev
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The GUI application should launch shortly after.
If you have any questions or need further assistance, feel free to reach out to us via the project's issue tracker, Email: [email protected] or Discord: stierprogrammer.

