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jdSystemMonitor vs System Monitoring Center: catalog facts
jdSystemMonitor	System Monitoring Center
Free Free and open source under the GPL.	Free Free and open source under the GPL-3.0 licence.
Linux	Linux
Process management plus CPU, RAM and swap monitoring Lists Flatpaks, autostart entries, packages and mounts	Detailed performance and usage views in one window Translated into many languages
Linux only No temperature or GPU monitoring mentioned	Linux only Several parallel versions can be confusing to choose between
Downloadable app	Downloadable app
Open source	Open source
License: 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 October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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