MacGap

MacGap supplies an Xcode project that lets developers who work with HTML, JavaScript, and CSS create native macOS applications. The generated apps run inside macOS’s built‑in WebView, leveraging WebKit without adding external browsers. A lightweight JavaScript API is provided for common macOS interactions such as showing native notifications and performing file‑system operations.

The framework is designed to be minimal; a blank application built with MacGap is under one megabyte in size. Because it uses standard WebView components and Apple‑approved APIs, the resulting binaries are compatible with the Mac App Store and require no non‑standard modifications.

Developers can start by cloning the repository, opening the Xcode project, and editing the public/index.html file. Documentation and support are available through the project’s website and issue tracker.