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socatrinetd
Free

Free and open source under the GPL.

 Free

Free and open source under GPL-2.0-or-later.

macOS, Linux, Command line Windows, Linux, Command line
  • Connects almost any pair of endpoints, including TLS and serial devices
  • Handles forking servers and complex options netcat cannot
  • Forwards TCP and UDP connections between addresses and ports
  • Includes configuration files and a manual page
  • The address syntax is dense and unforgiving
  • The project site is served over plain HTTP only, so the repository is linked here instead
  • Configured and operated from the command line
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0 License: GPL-2.0-or-later
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked October 8, 2026

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