Compare software

mactop vs Power Monitor: catalog facts
mactop	Power Monitor
Free Free and open source under the MIT licence.	Free Free and open source under the Apache 2.0 licence.
macOS, Command line	macOS
Separate metrics for efficiency and performance cores Shows GPU usage and frequency, power draw and temperatures	Real-time power consumption readings Carbon footprint estimate based on location
Only works on Apple Silicon Macs Terminal interface only	macOS only No formal GitHub releases
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: Apache-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 October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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