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LiveTcpUdpWatch vs CurrPorts: catalog facts
LiveTcpUdpWatch	CurrPorts
Free Freeware from NirSoft that may be redistributed free of charge.	Free Freeware from NirSoft; free to redistribute as long as nothing is charged.
Windows	Windows
Captures UDP activity with process information, without a sniffer Shows bytes, packets and timings per connection	Shows the process, path and user behind every open port Can close TCP connections and kill the owning process
Requires administrator rights on Windows Vista and later Windows only	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: Freeware	License: Freeware
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 8, 2026

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