Spring

A modern Minecraft Java Edition launcher for macOS, Windows, and Linux.

Spring is a fast, lightweight Minecraft launcher built with Tauri (Rust + React). It features a modern UI, seamless Microsoft authentication, and easy instance management.

Features

• Microsoft Authentication - Secure OAuth2 login with automatic browser redirect
• Multiple Instances - Create and manage separate Minecraft installations
• Mod Support - Install Forge, Fabric, and Quilt mod loaders
• Mod Browser - Search and install mods directly from Modrinth
• Auto Java Setup - Automatic Java detection and download
• Skin Management - Change your Minecraft skin from the launcher
• Instance Settings - Per-instance memory allocation, Java args, and more
• Cross-Platform - Works on macOS, Windows, and Linux
• Lightning Fast - Native performance with Rust backend

Installation

Download the latest release from the releases page.

Supported Platforms

• macOS 10.15+ (Intel & Apple Silicon)
• Windows 10/11
• Linux (most distributions)

Building from Source

Prerequisites

• Node.js 18+
• Rust (stable toolchain)

Steps

git clone https://github.com/mattiasmicu/Spring.git
cd Spring
npm install
npm run tauri build

The built app will be in src-tauri/target/release/bundle/.

Development

For development with hot reload:

npm run tauri dev

Tech Stack

• Frontend: React + TypeScript + Tailwind CSS + Framer Motion
• Backend: Rust + Tauri
• Authentication: OAuth2 + PKCE (Microsoft OAuth)
• HTTP Client: reqwest
• State Management: Zustand

Project Structure

Spring/
├── src/                    # React frontend
│   ├── panels/            # UI panels (Home, Instances, Settings, etc.)
│   ├── components/        # Reusable UI components
│   └── store/             # Zustand state management
├── src-tauri/             # Rust backend
│   └── src/commands/      # Tauri commands (auth, launch, download, etc.)
└── public/                # Static assets

Contributing

Pull requests are welcome! For major changes, please open an issue first to discuss what you would like to change.

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

Acknowledgments

• I have got alot of inspo from PandoraLauncher
• Minecraft version metadata from Mojang
• Mods from Modrinth

License

This project is licensed under the MIT License. See LICENSE for details.

Spring is not affiliated with Mojang Studios or Microsoft. Minecraft is a trademark of Microsoft Corporation.