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Alt-Tab Terminator vs Window Switcher: catalog facts
Alt-Tab Terminator	Window Switcher
Freemium Free version available; Pro costs $19.95 or less for a lifetime licence.	Free Free and open source under the MIT licence.
Windows	Windows
Search the list of open windows Large live previews	Switches between windows of the same app with one shortcut Optional app-level Alt+Tab switching
Windows only Some features require the paid Pro licence	Windows only Configuration is by editing a file rather than a settings window
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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