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RustNet vs CurrPorts: catalog facts
RustNet	CurrPorts
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Freeware from NirSoft; free to redistribute as long as nothing is charged.
Windows, macOS, Linux, Android, Command line	Windows
It shows TCP, UDP and QUIC connections with the owning process and detected protocol, sandboxed by default and…	Shows the process, path and user behind every open port Can close TCP connections and kill the owning process
It is a young project, and deep packet inspection still needs elevated capture permissions.	Official requirements list Windows versions up to Windows 10 The 'Use DNS Cache For Host Names' option leaks memory during long auto-refresh sessions
Downloadable app	Downloadable app
Open source	Closed source
License: Apache-2.0	License: Freeware
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 8, 2026

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