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AltTab vs TabTab: catalog facts
AltTab	TabTab
Free The software is free under its open-source licence. Hosting, hardware and external…	Freemium Free download with paid Pro plans.
macOS	macOS
It switches between individual windows with live thumbnail previews instead of macOS's application-level switcher, with…	Searches both windows and individual browser tabs Keyboard hotkey driven
It needs screen recording and accessibility permissions, and thumbnail previews cost some memory on a busy desktop.	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.