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Ping Monitor vs Echo: catalog facts
Ping Monitor	Echo
Free Free and open source under the MIT licence.	Free Free and open source under the GPL-3.0 licence.
Linux, Android	Linux
Real-time latency graph Tracks multiple hosts at once	Graphical ping without the terminal Lightweight and single-purpose
Only measures ping latency, no deeper diagnostics Small project with a single maintainer	May need a system setting changed to allow pings Only does ping, no traceroute or port checks
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0-or-later
No account needed	No account needed
Not stated if it works offline	Needs internet
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.