1)   ActiveComport Serial Port Toolkit 3.0
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, PHP, Delphi and VBScript.

 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

 3)   Virtual Serial Port Kit 5.0.8
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.

 4)   SimpleTerm Gold - RS232 Monitor / RS232 Terminal 5.0
SimpleTerm Gold is an advanced RS232 data analyser / visual scripter. View and send (all 256) ASCII/Binary data in an easy to read colour coded sequence. Macros and Visual Scripting support.

 5)   Look RS232 4.3
Look RS232 is a tool for debugging computer connection with peripheral devices using COM port, such as modem, mini-ATS, projector etc. Its easy to use interface guarantees an easy work with Com-port.

 6)   Serial Port Mapper 1.3.4
It allows you to map any serial ports to any other ports. E.g. you install additional COM port expansion card to computer as COM7 serial port but your favorite software can work with COM1 port only. To resolve this problem you can use this program.

 7)   COM Port Stress Test 1.2.1.21
COM Port Stress Test is a compact and affordable tool for testing COM, RS232 and RS485 ports that generates an extremely fast data stream with alternating baud rate, flow control, RTS and DTR states. Try it right now and you won't be disappointed!

 8)   COM Port Data Emulator 2.5.0.16
COM Port Data Emulator is a unique tool that will be a great asset in the arsenal of any developer working with serial interfaces. It was created for emulating a COM or Ethernet device, generating a stream of data and sending it to a specific port.

 9)   Remote Access Management Software 2.2
Purchase Remote com port data transfer shareware online to record remote computer serial port data log TCP/IP address equipment received information resolve network devices remote access problem password protect connections to remote serial ports

 10)   Serial Port Redirector 1.7.1
Connect a serial application to a remote TCP socket. This allows you to utilize modern hardware COM servers without changing your software or exchange data between a TCP/IP application and an old-fashioned program that doesn't support TCP/IP.