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Topit vs WindowTop: catalog facts
Topit	WindowTop
Free Free and open source under the AGPL-3.0 license.	Freemium Free to use, with advanced features in a paid Pro version.
macOS	Windows
Pins windows from any application Supports pinning multiple windows	Always-on-top pinning for any window Interactive picture-in-picture with cropping
Requires macOS 13 or later	Windows only Some features require the Pro version
Downloadable app	Downloadable app
Open source	Closed source
License: AGPL-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	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 23, 2026

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