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Netiquette vs CurrPorts: catalog facts
Netiquette	CurrPorts
Free Free download from Objective-See.	Free Freeware from NirSoft; free to redistribute as long as nothing is charged.
macOS, Command line	Windows
Connections grouped by the process that made them Shows ports, protocol, state and bytes transferred	Shows the process, path and user behind every open port Can close TCP connections and kill the owning process
macOS only, 10.15 or later Monitors connections but does not block them	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
Closed source	Closed source
License not stated	License: Freeware
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 8, 2026

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