AnvilBuild a native Minecraft launcher by writing only HTML.

The Rust backend handles Java, downloads, launch and updates. You only touch the frontend.

Zero-config native launcher

Generate a Windows · macOS · Linux launcher from a config.json file and an HTML page — no native code to write.

Java & Minecraft handled for you

Downloads and manages Java, vanilla/Fabric/Forge assets, and launches the game with session management.

Any frontend you like

Vanilla, React, Vue or Solid — with or without TypeScript. Eight ready-made templates.

Mods per instance

Declare mods in config.json and they're downloaded, verified and kept in sync automatically.

Auto-updates & icons

Ship update manifests via URL and generate every app icon size from a single logo file.

Microsoft and custom sessions

Sign in with a Microsoft account, bring your own authentication, or use offline mode.