One of the industry-standard device communications protocols is RS232 / RS485 / RS422 serial interface or COM port for short. Creating devices that communicate with PC via serial port is very cost-effective, not mentioning the amazing hardware compatibility. Most computers are equipped with at least one free serial port. However, developing hardware and software solutions that are built around COM port communications protocol is rather a challenging task without proper tools.

Introducing Advanced Serial Port Monitor by AGGsoftware, the unique serial port monitoring and data handling solution that allows developers focus on their project instead of battling hardware.

Advanced Serial Port Monitor can operate in manual, automatic and spy modes providing developers with unique opportunity to monitor all data received from device connected to COM port as well as send data directly to a serial port either manually or automatically on given time intervals. The application supports full duplex mode, which means you can use it anytime without having to close or restart programs already communicating with a device via serial port.

Advanced Serial Port Monitor supports all possible baud rates, data bits number, stop bits number, parity and flow control types. Besides flexible configuration, the software supports plug-ins used to emulate various devices and expand software functionality. The application comes with comprehensive help system and intuitive interface to make it easy to start using it right after installation.
 
Fully functional
Source: None
Price: $65

AlarIT Virtual Serial Driver realizes full emulation of Serial Port functions, connected with each other with the help of NULL-MODEM or full cable, including DTR, CTS, DSR, RTS. AlarIT Virtual Serial Driver can be interesting for software (for Windows Platforms) developers, who use external devices connected with computer by serial port. Also, it will be interesting for developers of the products appointed for connection of two or more computers through serial ports.

Feature list for our product AVSD 2.0:

• Based on Microsoft Windows XP DDK, (3d parts development products not used);
• Register Windows Device Name: DeviceSerialX;
  
• Register Dos Device Name: DosDevicesCOMX;
• Register SERIALCOMM Name: COMX;
• Baud rate emulation up to 115200;
• Hot Plug-n-Play emulation;
• Hardware Flow Control Emulation;
• Hardware SERIAL EVENTS emulation: RXCHAR, RXFLAG, TXEMPTY, CTS, DSR, RLSD, BREAK, ERR, RING, PERR, RX80FULL, EVENT1, EVENT2;
• Null-modem emulation;
• Up to 200 serial ports emulation.

• x0d
• @echo offx0d
• clsx0d
• DDial -d:"A Dialup networking connection to dial"x0d
• @echo Start some ftp sessions...x0d
• FTP.EXE -s:Ascript.srcx0d
• DDial -H

Serial Port Monitor also offers advanced filtering and search, professional built-in terminal and data exporting options, user-friendly and flexible interface among its key advantages. It is a completely software solution, you don't need any additional hardware to use it.
 
Evaluation (time-limit)
Source: None
Price: $69.95

It is software that provides an engineer with toolkit, necessary for operating with COM-port. It is handy terminal program, and powerful visual data transmission protocol designer, as well as data acquisition and processing system. Furthermore, it is possible to organize the program management not only manually, but through the Internet as well. The management is realized by the server application.

The program RS232 Pro can work as an ordinary terminal program. The user can tune up the COM-port in the way he needs. When started, the program opens the COM-port at once and switches to standby mode. After receiving byte succession (hereinafter called a packet) the data are received and displayed.The user may design himself any byte succession for subsequent forwarding by COM-port.

RS232 Pro is multifunctional software, which allows you to start debugging communicational part of the device being developed or to organize the remote device management process on a serial bus at once.
 
With Nag-Screen
Source: N/A
Price: $120

Serial Splitter offers various types of ports managing (one-to-many, many-to-one, many-to-many ports' connections, serial port data redirection and more), where serial ports (physical or virtual ones or both kinds at once) are used at any side of the bundle you can easily create.
 
Evaluation (time-limit)
Source: None
Price: $99.95