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Constrict vs Clop: catalog facts
Constrict	Clop
Free Free and open source under the GPL-3.0-or-later.	Freemium Free to use, with a Clop Pro lifetime licence for 15 euros.
Linux	macOS
Targets an exact output file size automatically Batch compression of multiple videos	Optimises images automatically when copied Shrinks screen recordings right after recording
Steep size reductions can badly hurt quality or fail Speed limited by local hardware	macOS 13 or later only Some features require Clop Pro
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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