Virtual Serial Port Kit 

Virtual Serial Port Kit creates pairs of virtual serial ports in your system which are virtually connected to each other. Physical null modem cables are not required. You can connect any number of virtual port pairs. It's very useful for debugging.
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Serial Port ActiveX Control 

Use Serial Port component to easily communicate with external devices on RS232 connection - as modems, bar code readers, PBX etc. Serial Port introduces properties for serial port setting, methods to write/read from port, events for monitoring port.
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ActiveComport Serial Port Toolkit 

Serial port toolkit to enable applications or scripts to communicate with a modem or other serial port device. Features full com port control, binary and ASCII data transfer, support for RS 232 and RS 485 standards and ISDN modem support.
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WinXfer 

WinXfer is a versatile file transfer utility that allows transferring files between two computers directly connected through the serial port or through a modem. It is very easy to use and very intuitive.
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Windows Std Serial Comm Lib for Visual Basic 

VB serial communication component library for serial port communications. Controls multiple ports simultaneously; works with both Visual Basic and VB.Net. Does not depend on support libraries. Can use with any language that can call the Windows API.
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Windows Std Serial Comm Lib for FoxPro 

Visual Foxpro serial communication component library for serial port communications. Controls multiple ports simultaneously; works with all versions of VFP. Not dependant on support libraries. Use with any language that can call the Windows API.
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