Saturn Client

Saturn Client

A free and open-source Minecraft client.
Built with performance, customization, and community in mind.

About

Saturn Client is a free, open-source Minecraft client designed to enhance the gameplay experience while staying lightweight and customizable.
Our goal is to build a clean, optimized client that the community can contribute to and improve together.

Saturn runs on Fabric and supports Minecraft 1.21.4 to 1.21.11, with one build per version. If something doesn't work on your version, please open an issue.

Features

• Free cosmetics that don't require real money: cloaks, including animated ones, and hats
• 18 built-in mods: Armor Display, Auto Sprint, Clock, Coordinates, Crosshair, Day Counter, FPS Display, Freelook, Fullbright, Health Display, Keystrokes, Nametags, No Fog, Ping Display, Speedometer, Status Effects, TPS Display and Zoom
• Clean and modern UI with animations
• Ongoing performance improvements
• Open-source and community-driven

Installation

1. Install Fabric Loader and Fabric API for your Minecraft version.
2. Download the Saturn Client jar for the same version from Modrinth or the releases page.
3. Put it in your mods folder.

Network use

For cosmetics, Saturn Client connects to the Saturn server (saturn-server.selimaj.dev). You're signed in the same way as on an online-mode Minecraft server: your client proves who you are to Mojang's session server, and the Saturn server asks Mojang to confirm it. Your Minecraft access token is only ever sent to Mojang, never to the Saturn server.

Building from source

The version-independent code lives in the common submodule, so clone with submodules:

git clone --recurse-submodules https://git.selimaj.dev/saturnclientmc/saturnclient.git
cd saturnclient

./gradlew buildAll                    # every version → build/allJars/
./gradlew :mc-1.21.11:build           # a single version
./gradlew :mc-1.21.11:runClient       # launch a development client

Building needs Java 21.

Contributing

We welcome contributions of all kinds:

• Code improvements
• Bug fixes
• UI enhancements
• Cosmetic designs
• Suggestions and feedback

If you're an artist or designer interested in helping with cosmetics or visual assets, we'd love to collaborate.

Most features belong in common, which every Minecraft version shares. For code that differs between versions, see the version guide: it covers how the versions are laid out, porting a change to all of them with scripts/port.sh, and adding a new Minecraft version. Every pull request is compiled for all versions automatically.

Credits

• Cloak Rendering: IIpho3nix & Saturn
• Who Am I: FokshaWasTaken
• Panorama:
  https://www.planetminecraft.com/texture-pack/minecraft-cavesand-cliffs-part-ii-main-menu-panorama/

If any code or assets belong to you and you would like them removed, please open an issue.
We aim to properly credit all contributors and respect original creators of their respective art.

License

Saturn Client is free and open-source under the Apache-2.0 license.

Made with ❤️ by the Saturn Client team