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WindowTop vs Topit: catalog facts
WindowTop	Topit
Freemium Free to use, with advanced features in a paid Pro version.	Free Free and open source under the AGPL-3.0 license.
Windows	macOS
Always-on-top pinning for any window Interactive picture-in-picture with cropping	Pins windows from any application Supports pinning multiple windows
Windows only Some features require the Pro version	Requires macOS 13 or later
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: AGPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 8, 2026

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