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Sidebar Diagnostics vs Moo0 System Monitor: catalog facts
Sidebar Diagnostics	Moo0 System Monitor
Free Free and open source under the GPL-3.0 licence.	Free Free to download and use.
Windows	Windows
Always-visible sidebar instead of a separate window Covers CPU, RAM, GPU, network and drives	43 kinds of readings to choose from Includes CPU, GPU and disk temperatures
Windows only Last code change was in early 2024	Windows only Closed source
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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