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Sloth vs CurrPorts: catalog facts
Sloth	CurrPorts
Free Free and open source, with optional donations.	Free Freeware from NirSoft; free to redistribute as long as nothing is charged.
macOS	Windows
Shows files, sockets, pipes and devices per process Filtering by type, location or regular expression	Shows the process, path and user behind every open port Can close TCP connections and kill the owning process
macOS only Built on lsof, so it shows only what lsof can report	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 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.