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StressMyPC vs stress: catalog facts
StressMyPC	stress
Free Freeware for Windows.	Free Free and open source under GPL-2.0-or-later.
Windows	macOS, Linux, Command line
Separate stress tests for CPU, graphics and storage Can be run without installation	Configurable CPU, memory, I/O, and disk loads Reports errors detected during a run
Windows only Unstable or overclocked systems may crash under load	Designed for POSIX-compliant operating systems.
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0-or-later
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 8, 2026	Official website Full listing and sources Checked October 8, 2026

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