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SJMCL is a free, open-source Minecraft launcher developed by the SJMCL community to simplify game installation and management. It supports multiple Minecraft installations, game directories, and independently configured instances. Users can download game versions, mod loaders, modpacks, and additional resources from CurseForge and Modrinth. The launcher provides centralized management of mods, resource packs, shaders, saves, and screenshots. It supports Microsoft account authentication and compatible third-party authentication services. Its extension system allows developers to add functionality, while deeplinks and Model Context Protocol integrations enable external automation. Built with Tauri, SJMCL is available for Windows, macOS, and Linux.
Features
- Multiple Minecraft instance management with independent game directories and settings
- Integrated game version, mod loader, and modpack downloading
- CurseForge and Modrinth integration for discovering and installing game resources
- Centralized management of mods, shaders, resource packs, saves, and screenshots
- Microsoft account login and compatible third-party authentication server support
- Extensible launcher architecture with deeplinks, community extensions, and MCP integration
Project Samples
