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y-cruncher vs stress-ng: catalog facts
y-cruncher	stress-ng
Free Freeware, free to download and use.	Free Free and open source.
Windows, Linux, Command line	Linux, Command line
Scales across many CPU cores Established benchmark with published fastest times	Stresses CPU, memory, I/O and kernel interfaces Stressors can be run individually or combined
Closed source freeware Large computations need a lot of memory and disk space	Command line only Can make a system unresponsive if used carelessly
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	License: GPL-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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