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DockDoor vs Taskbar: catalog facts
DockDoor	Taskbar
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free until 19 December 2026; the site does not say what happens after that date.
macOS	macOS
Hovering a Dock icon previews every open window for that application, which macOS otherwise leaves you guessing about.	One button per window instead of per app Window previews on hover
This is the free application; the separately sold DockDoor Pro holds the extra features, and it needs accessibility…	Free period is stated to end on 19 December 2026 macOS only
Downloadable app	Downloadable app
Open source	Closed 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 1, 2026

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