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atop vs sysstat: catalog facts
atop	sysstat
Free Free to download and use.	Free Free and open source.
Linux, Command line	Linux, Command line
Includes processes that finished during the interval Daily logging for long-term analysis	Records historical activity data with sar for later review Covers CPU, disk, per-process and network statistics
Linux only Per-process network data needs an extra kernel module	Linux only Text output with no graphical interface
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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