disk serial

Virtual Serial Port Driver allows creating virtual serial port pairs on PC.

Simulink serial - Using Simulink with serial devices - example model

Convert serial data to the TCP/IP format and TCP/IP data to serial data

Control external devices with serial interface - use Serial Port AX Control.

Eltima Serial Port Terminal - a handy application for testing serial ports.

Free Virtual Serial Ports Emulator

Use a collection of asynchronous serial communications functions for Delphi.

PC Serial Nr handy tool returns basic computer info

Allows you to connect any serial port devices over TCP/IP network or Internet

MATLAB supports serial devices including RS-232 when using the Instrument.