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AIDA64 Extreme vs OCCT: catalog facts
AIDA64 Extreme	OCCT
Paid A paid licence is required after the trial.	Freemium Free for individuals, with offerings for professional and business use.
Windows	Windows, Linux
Extremely detailed hardware and software inventory with exportable reports Sensor readings can be sent to an external display or a remote client	Stress testing, benchmarking and monitoring in one tool Free for individual users
Paid licence with a time-limited trial Windows only	Closed source Professional use is a separate offering
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

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