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OverviewDockDoor
Free

Free and open source, supported by GitHub Sponsors.

 Free

The software is free under its open-source licence. Hosting, hardware and external…

macOS macOS
  • Live previews of any app with configurable frame rates
  • Quick switching by click or keyboard shortcut
  • Hovering a Dock icon previews every open window for that application, which macOS otherwise leaves you guessing about.
  • Still in beta
  • macOS only
  • This is the free application; the separately sold DockDoor Pro holds the extra features, and it needs accessibility…
Downloadable app Downloadable app
Open source Open source
License not stated License: GPL-3.0
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 2, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.