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OCCT vs Crucible: catalog facts
OCCT	Crucible
Freemium Free for individuals, with offerings for professional and business use.	Free Free and open source under the GPL-3.0-or-later licence.
Windows, Linux	Linux
Stress testing, benchmarking and monitoring in one tool Free for individual users	Specs view and stress test in one simple app Live CPU temperature and usage during tests
Closed source Professional use is a separate offering	Small, young project with few contributors Linux only
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-or-later
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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