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btop++ProcessSpy
Free

Free and open source, funded by donations.

 Free

Offered as a direct download from the developer's site.

macOS, Linux, Command line macOS
  • Sortable, filterable process list with per-process detail, driven by mouse or keyboard
  • Graphs for CPU, memory, disks and network in one screen
  • Per-process CPU and memory history
  • Recall of processes that have already exited
  • No native Windows build; on Windows you need WSL
  • It reports and does not manage: there is no alerting or historical logging
  • macOS only, and requires macOS 14 or later
Downloadable app Downloadable app
Open source Closed source
License: Apache-2.0 License not stated
No account needed Not stated if an account is needed
Works offline Works offline

Checked September 20, 2026

Checked October 1, 2026

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