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atop vs htop: catalog facts
atop	htop
Free Free to download and use.	Free Free and open source under the GPL.
Linux, Command line	macOS, Linux, Command line
Includes processes that finished during the interval Daily logging for long-term analysis	Kill, renice and filter processes interactively without typing PIDs Per-core meters and tree view make load easy to read at a glance
Linux only Per-process network data needs an extra kernel module	Terminal only, with no historical graphing Some counters differ per platform outside Linux
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
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 September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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