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Plasma System Monitor vs bottom: catalog facts
Plasma System Monitor	bottom
Free Free and open source, developed by the KDE community.	Free Free and open source under the MIT licence.
Linux	Windows, macOS, Linux, Command line
Shows sensors, processes and resource usage in one window Customizable monitoring pages	Plots CPU, memory, network, temperature and disk I/O over time, with a zoomable interval Process widget with sorting, searching, tree mode and kill signals
Linux only Most at home on a KDE Plasma desktop	Some sensors and metrics are only available on some platforms Charts take terminal space; a small window gets cramped
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-only OR GPL-3.0-only	License: MIT
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 21, 2026

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