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atop vs below: catalog facts
atop	below
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 data so past events can be replayed Shows the cgroup hierarchy alongside process details
Linux only Per-process network data needs an extra kernel module	Linux only Aimed at servers rather than casual desktop use
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: Apache-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.