Compare software

Power Monitor vs mactop: catalog facts
Power Monitor	mactop
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under the MIT licence.
macOS	macOS, Command line
Real-time power consumption readings Carbon footprint estimate based on location	Separate metrics for efficiency and performance cores Shows GPU usage and frequency, power draw and temperatures
macOS only No formal GitHub releases	Only works on Apple Silicon Macs Terminal interface only
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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