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stress vs stress-ng: catalog facts
stress	stress-ng
Free Free and open source under GPL-2.0-or-later.	Free Free and open source.
macOS, Linux, Command line	Linux, Command line
Configurable CPU, memory, I/O, and disk loads Reports errors detected during a run	Stresses CPU, memory, I/O and kernel interfaces Stressors can be run individually or combined
Designed for POSIX-compliant operating systems.	Command line only Can make a system unresponsive if used carelessly
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License: GPL-2.0
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 October 8, 2026	Official website Full listing and sources Checked October 2, 2026

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