Virtual Serial Port
Virtual COM port software
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The Null-modem emulator is an open source kernel-mode virtual serial port driver for Windows, available freely under GPL license.Allows you to create an unlimited number of virtual COM port pairs and use any pair to connect one COM port based application to another. -
Windows user-mode application, which allows you to create software virtual serial ports and emulate physical serial ports behavior. It operates exclusively in user-mode, therefore it is more stable and uses less memory, processor and operating system resources than any competitive products. -
HW VSP is a free software driver that adds a virtual serial port (e.g. COM5) to the operating system and redirects the data from this port via a TCP/IP network to another hardware interface -
Software to create virtual com ports when you need to assing different serial ports and you have just one COM port on your PC. Commercial version -
VSP Manager is a software program that creates serial port pairs which allows software programs to talk to each other using Cat commands. This virtual com port emulator is offered FREE to Ham Radio Operators. -
Virtual Serial Ports Emulator for Windows. Virtual Serial Ports Emulator tool (and VSPE API) is free on 32 bit platform and can be used with no charge for any purpose. No registration or activation key is required.