Parallel Port PIC Programmer uses PC's parallel port for communication.
ELTIMA Software GmbH
Control serial ports and manage them and track their activity.
Displays, logs and analyzes all serial port activity in a system.
Virtual Serial Port Driver allows creating virtual serial port pairs on a PC.
Free Serial Port Monitor, RS232 Com Software Sniffer and Communication Analyzer.
HW Virtual Serial Port allows creating virual serial port drivers.
VSPE is intended for engineers and developers to create/debug/test applications.
Serial Port Software
Serial Port Splitter grants simultaneous access to a COM port from several apps.
This app allows you to check the flow of data through a computer's COM ports.
HHD Software, Ltd.
It allows you to create virtual serial ports and emulate their behavior.
A tool to provide a visual means to send and receive data through serial ports.
Allows you to work with any serial devices connected to remote computers.
Free, unrestricted Virtual Serial Port driver for any TCP/IP devices.
Serial Port Tool
Professional debug tool for serial port, TCP/IP, UDP, I2C, HTTP communication.
TCPCOM32 is designed to be a serial port to TCP/IP connection mapper.
Creates tunnel providing data transfer between TCP/IP and serial port.
Sollae Systems Co.,Ltd.
ezVSP is a virtual serial port driver and TCP/IP socket program.
TCP2COM is a tool to bridge a TCP socket to a Serial port.
Bridging RS232/RS485/RS422/TTL Serial Port and TCP/IP.
Scriptable data terminal supporting serial port, UDP, TCP client/server, etc.
Remap (redirect) all data sent from one serial port to any other serial port.
Free Serial Port Terminal is a handy and easy to use serial port terminal.