WindowShelf
WindowShelf is a native macOS window manager built with Swift, SwiftUI and AppKit. It provides a persistent sidebar for viewing, switching, organizing and controlling open windows across all apps, Spaces and displays. Users can group related windows from different applications into custom named shelves, arrange windows into tiling layouts (halves, corners, center, maximized), and maintain persistent window arrangements for different workflows. It is designed for people who work with many windows simultaneously—developers, designers, researchers, writers and operators—and relies on the macOS Accessibility API for window control. WindowShelf is distributed as a free, unsupported app.
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1 suggestionWindowShelf is already distributed as a native Apple Silicon app. The vendor's site confirms it is built natively with Swift and SwiftUI and explicitly supports both Apple Silicon and Intel Macs at the same download. If you are still running an older Intel-only version, simply download the latest release from windowshelf.app and reinstall—the current build is Universal Binary and will run natively on M-series Macs with no performance loss under Rosetta emulation. No action is required on your part beyond a standard app update.
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