Ewen “Speccie” Wannop has released Networker, a Marinetti-aware educational and diagnostic application for anyone interested in learning about TCP/IP programming on the Apple IIGS. It can be used to issue commands to remote servers and display their response.
Networker is free, and requires an Apple IIGS with GS/OS 6.0.1, and Marinetti. An Ethernet card with a supported link layer driver (Uthernet or LANceGS) is preferred but it will also work with serial/modem connections.