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OpenTrace vs PingPlotter: catalog facts
OpenTrace	PingPlotter
Free Free and open source under the GPL-3.0 licence.	Freemium Free tier available; paid plans unlock longer history and more targets.
Windows, macOS, Linux	Windows, macOS
Visual display of traceroute hops Runs on Windows, macOS and Linux	Hop-by-hop view pinpoints where in the route problems occur Long-running timeline view catches intermittent issues
Focused on route tracing only Documentation is partly in Chinese	Free tier is limited compared to paid plans Diagnosing root cause still often requires ISP cooperation
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 22, 2026

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