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Astra Monitor vs Mission Center: catalog facts
Astra Monitor	Mission Center
Free Free to install from its public GitHub repository.	Free Free and open source under the GPL 3.0.
Linux	Linux
Covers CPU, GPU, memory, storage, network and sensors Always visible in the GNOME panel	Familiar Task Manager layout with per-core and per-process detail GPU usage for AMD, Intel and NVIDIA cards
Only works on the GNOME Shell desktop Panel indicators are less detailed than a full monitoring app	Linux only Fewer sensors and less depth than a command line monitor
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 21, 2026

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