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Plasma System Monitor vs Mission Center: catalog facts
Plasma System Monitor	Mission Center
Free Free and open source, developed by the KDE community.	Free Free and open source under the GPL 3.0.
Linux	Linux
Shows sensors, processes and resource usage in one window Customizable monitoring pages	Familiar Task Manager layout with per-core and per-process detail GPU usage for AMD, Intel and NVIDIA cards
Linux only Most at home on a KDE Plasma desktop	Linux only Fewer sensors and less depth than a command line monitor
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-only OR GPL-3.0-only	License: GPL-3.0
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.