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DockDoor vs Overview: catalog facts
DockDoor	Overview
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free and open source, supported by GitHub Sponsors.
macOS	macOS
Hovering a Dock icon previews every open window for that application, which macOS otherwise leaves you guessing about.	Live previews of any app with configurable frame rates Quick switching by click or keyboard shortcut
This is the free application; the separately sold DockDoor Pro holds the extra features, and it needs accessibility…	Still in beta macOS only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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