The TCP Port Toolkit is a Winsock client application with data transmission, log and scripting features. You can use this program for implementing and debuging TCP/IP (or UDP/IP)-based protocols. The TCP Port Toolkit can send and receive commands in textual and binary code if a successful connection to a server is established.
COM Port Toolkit 4.0
Serial port monitoring on Win9x/ME/2K/XP/7 PCs.
Serial Port Toolkit
USB Port Locker 126.96.36.199
Windows network computer USB port locker tool
Port Analyzer 1.0
Free network port analyzer software
COM Port Splitter 5.0.119
Handle serial ports with COM Port Splitter