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CurrPorts vs Sloth: catalog facts
CurrPorts	Sloth
Free Freeware from NirSoft; free to redistribute as long as nothing is charged.	Free Free and open source, with optional donations.
Windows	macOS
Shows the process, path and user behind every open port Can close TCP connections and kill the owning process	Shows files, sockets, pipes and devices per process Filtering by type, location or regular expression
Official requirements list Windows versions up to Windows 10 The 'Use DNS Cache For Host Names' option leaks memory during long auto-refresh sessions	macOS only Built on lsof, so it shows only what lsof can report
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	License not stated
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 1, 2026

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