Virtual Serial Ports Kit for easy and robust serial port emulation
Virtual Serial Ports - is a software solution that allows you to create virtual com ports and connect them to each other using software-based virtual null-modem cable or connect them to different serial applications and virtual devices via named pipes.
Ports that you need to connect with virtual null modem links are not required to be located on the same computer, they can even be located anywhere in the world and connected by means of a network connection. Developer API is provided for easy integration into your system.
All ports and links created by this com port null-modem emulator behave exactly the same as real physical serial ports and null-modem cables. This product emulates all hardware serial port functionality, including baud rate, data bits, parity bits, stop bits, etc. It allows you to control the data flow, emulating all signal lines (DTR, DSR, CTS, RTS, DCD, and RI) and customizing pinout. VSP emulates hardware and XON/XOFF flow control, TX queue overflow and even line noise.
This is completely software-based solution that requires no additional physical hardware to operate. For over a decade, the program has been developed and continuously refined. It provides you with clear and intuitive user interface, detailed documentation and requires no programming skills to start using it. Download this virtual serial port utility now and start emulating com ports in a few seconds!
Functionalities
It emulates hardware control lines and physical serial port configurations
It supports different virtual null modem pinouts schemes including full standard, partial, loopback and custom
It supports custom serial connection configurations (baudrate, parity, databits, stopbits and flow control)
It supports advanced dataflow control options: TX queue overflow (overflow of transmission buffer) and serial line noise emulation
It support Software XON/XOFF Flow control, Hardware and even Custom flow controls
It supports all standard Windows serial port speed rates of 75, 110, 300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000 bit/s and custom bit rates
It emulates all serial line data, signals and handshaking states
It uses only user-mode OS API calls for better system stability and performance
It supports Windows WMI, Power Management, PnP and more technologies
Virtual Serial Ports also provides you with Software Developer Kit (SDK), API provides you with ActiveX/COM Component and .NET Component so you may create code/scripts in order to manage virtual COM ports and interconnections within your projects.
Unlimited number of virtual serial interfaces and com port pairs may be created. This product is popular free com0com alternative with signed drivers and probably best virtual serial port kit for developers available on the market today.
HHD Software 
