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Open Hardware Monitor vs AIDA64 Extreme: catalog facts
Open Hardware Monitor	AIDA64 Extreme
Free Free and open source under the Mozilla Public License.	Paid A paid licence is required after the trial.
Windows, Linux	Windows
Open source, so the sensor handling can be inspected and reused Readings can sit in the tray or a desktop gadget	Extremely detailed hardware and software inventory with exportable reports Sensor readings can be sent to an external display or a remote client
Upstream development stopped years ago; Libre Hardware Monitor is the maintained fork Newer chipsets and sensors are frequently unrecognised	Paid licence with a time-limited trial Windows only
Downloadable app	Downloadable app
Open source	Closed source
License: MPL-2.0	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 22, 2026

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