Open Source Server Operating Systems Serial Software

The Null-modem emulator (com0com) is a kernel-mode virtual serial port driver for Windows. You can create an unlimited number of virtual COM port pairs and use any pair to connect one COM port based application to another. The HUB for communications (hub4com) allows to receive data and signals from one COM or TCP port, modify and send it to a number of other COM or TCP ports and vice versa.

Multiplatform Serial Port Module for Python (Win32, Jython, Linux, BSD and more)

tcp2com creates a bridge between a TCP socket and a serial port (COM). The program runs as a service under Windows NT. With tcp2com, you can telnet into any device you may have plugged into your COM port.

Operating System for embeded device based on small µController (Microchip, Atmel, …) This OS enable the device to be connected and controlled by a PC trought RS232 protocol (COM, TTY or USB port) with standard Terminal or Shell integration.

A real-time serial port device driver, works with RT-Linux and RTAI.

Arm mini real-time OS, cooperative kernel for LPC 2106, Arm TDMI-s cores.

picure is a project using PIC microcontroller