1)   ActiveComport Serial Port Toolkit 2.0
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.
serial, port, serial port, modem, modems, com, comport, com port, asynchronous, rs-232,

 2)   ActiveComport Serial Port Development Kit 2.1
Serial COM port Communication SDK to add serial communications to your project. Communicate with a modem, scanner, printer or any other serial port device. Samples included for ASP, VB, VB .NET, VC++, VC# .NET, JavaScript and VBScript
serial, port, serial port, modem, modems, com, comport, com port, asynchronous, rs-232,