Compare software

Packet Sender vs socat: catalog facts
Packet Sender	socat
Free Free and open source, with no ads or bundled software.	Free Free and open source under the GPL.
Windows, macOS, Linux, Command line	macOS, Linux, Command line
Sends and receives TCP, UDP, SSL and DTLS Command-line tool for scripted tests	Connects almost any pair of endpoints, including TLS and serial devices Handles forking servers and complex options netcat cannot
Low-level tool that assumes some networking knowledge Panel generator is aimed at control systems, a niche use	The address syntax is dense and unforgiving The project site is served over plain HTTP only, so the repository is linked here instead
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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