TCPTester is a free utility, originally developed to test communication with scales and balances over TCP/IP. It acts as a TCP client, opens a persistent socket connection to a TCP server and sends a user-defined command. Once a reply has been received, the command is repeated. A timeout can be specified, after which a timeout error is logged.
Version 0.2.4 is available now. Please note that this is very early release. TCPTester will update automatically when a new version is released.