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PowerTOP vs CoreFreq: catalog facts
PowerTOP	CoreFreq
Free Free to download and use.	Free Free to build and use from its public GitHub repository.
Linux, Command line	Linux, Command line
Shows which devices and processes use power Helps diagnose power management settings	Very detailed per-core frequency, C-state and power data Broad Intel and AMD processor support
Linux only Terminal interface only	Requires loading a kernel module Linux only and more technical than typical monitors
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
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 24, 2026

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