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DockDoor vs TabTab: catalog facts
DockDoor	TabTab
Free The software is free under its open-source licence. Hosting, hardware and external…	Freemium Free download with paid Pro plans.
macOS	macOS
Hovering a Dock icon previews every open window for that application, which macOS otherwise leaves you guessing about.	Searches both windows and individual browser tabs Keyboard hotkey driven
This is the free application; the separately sold DockDoor Pro holds the extra features, and it needs accessibility…	macOS 14 or newer only Some features require a Pro plan
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it 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.