Serial Port Control
Software developers can access various devices by utilizing the Windows API. When using an API, you gain access to a full spectrum of available features, but API programming is a very tough and time-consuming task. You have to study the documentation and you have to create all the... Just put it on a form and you have all the functionality you need to access a serial port, either physical or virtual. ... We recommend you give Serial Port Control from FabulaTech a try. ... Serial Port Control automatically enumerates all the ports available in the system.
http://www.serial-port-control.com/serial-port-control.zip - 561Kb - Download - Screenshot

AlarIT Virtual Serial Driver (AVSD)
AlarIT Virtual Serial Driver is appointed for emulation of one, two or more (up to 200) serial streams. Hardware devices are not necessary. This product is based on Windows XP DDK and doesn't require using devices of other manufacturers. The whole product is created with the help of Microsoft... 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...
http://www.alarit.com/downloads/products/avsd.zip - 448Kb - Download

Multicom.Net
While the operation of different facilities, which are connected to a computer via serial port, there may appear the necessity to start up utility program (for these facilities) not in the machine, to which the facilities connect directly, but in the remote machine, that is connected to the... The use of our product gives you the possibility to give the remote access to serial port via TCP/IP. ... Net server is a service which realizes the exchange between a real driver of the serial port and TCP/IP.
http://www.intellidriver.com/downloads/products/multicomnet.zip - 283Kb - Download

Windows Std Serial Comm Lib for PowerBASIC
MarshallSoft serial communication component PowerBASIC library (DLL) for serial port (RS-232. RS-422, RS-485) communications. Features of the Windows Serial Communications Library (WSC4PB) include: Uses the standard Windows API to communicate with any device connected to a serial port. ... Supports virtual serial ports (usb to serial converter, bluetooth serial); multi-tasking, Includes 32-bit (WSC32. ... Is port re-entrant. ... Programmer's, Reference, Users and Serial Comm Manuals provided. ... Free technical support and updates for one year.
ftp://ftp.marshallsoft.com/pub/windows/wsc4pb42.zip - 345Kb - Download - Screenshot

Windows Std Serial Comm Lib for Xbase++
MarshallSoft serial communication component Xbase++ library (DLL) for serial port (RS-232. RS-422, RS-485) communications. Features of the Windows Serial Communications Library (WSC4XB) include: Uses the standard Windows API to communicate with any device connected to a serial port. ... Supports virtual serial ports (usb to serial converter, bluetooth serial); multi-tasking, Includes 32-bit (WSC32. ... Is port re-entrant. ... Programmer's, Reference, Users and Serial Comm Manuals provided. ... Requires a Windows Visual Basic compiler.
ftp://ftp.marshallsoft.com/pub/windows/wsc4xb42.zip - 327Kb - Download - Screenshot

Windows Std Serial Comm Lib for dBase
MarshallSoft serial communication component Visual dBASE library (DLL) for serial port (RS-232. RS-422, RS-485) communications. Features of the Windows Serial Communications Library (WSC4DB) include: Uses the standard Windows API to communicate with any device connected to a serial port. ... Supports virtual serial ports (usb to serial converter, bluetooth serial); multi-tasking, Includes 16-bit (WSC16. ... Is port re-entrant. ... Programmer's, Reference, Users and Serial Comm Manuals provided.
ftp://ftp.marshallsoft.com/pub/windows/wsc4db42.zip - 339Kb - Download - Screenshot

Windows Std Serial Comm Lib for FoxPro
MarshallSoft serial communication component Visual FoxPro library (DLL) for serial port (RS-232. RS-422, RS-485) communications. Features of the Windows Serial Communications Library (WSC4FP) include: Uses the standard Windows API to communicate with any device connected to a serial port. ... Supports virtual serial ports (usb to serial converter, bluetooth serial); multi-tasking, Includes 16-bit (WSC16. ... Is port re-entrant. ... Programmer's, Reference, Users and Serial Comm Manuals provided.
ftp://ftp.marshallsoft.com/pub/windows/wsc4fp42.zip - 331Kb - Download - Screenshot

Windows Std Serial Comm Lib for Delphi
Serial communication component Delphi library (DLL) for serial port (RS-232. RS-422, RS-485) communications. Features of the Windows Serial Communications Library (WSC4D) include: Uses the standard Windows API to communicate with any device connected to a serial port. ... Supports virtual serial ports (usb to serial converter, bluetooth serial); multi-tasking, Includes 16-bit (WSC16. ... Programmer's, Reference, Users and Serial Comm Manuals provided. ... Is port re-entrant. ... NET, C++ Builder, PowerBASIC, Visual FoxPro, Visual dBase, Xbase++, and COBOL.
ftp://ftp.marshallsoft.com/pub/windows/wsc4d42.zip - 392Kb - Download - Screenshot

Windows Std Serial Comm Lib for C/C++
Serial communication component C/C++ library (DLL) for serial port (RS-232. RS-422, RS-485) communications. Features of the Windows Serial Communications Library (WSC4C) include: Uses the standard Windows API to communicate with any device connected to a serial port. ... Supports virtual serial ports (usb to serial converter, bluetooth serial); multi-tasking, Includes 16-bit (WSC16. ... Programmer's, Reference, Users and Serial Comm Manuals provided. ... Is port re-entrant. ... Can be ordered with or without source code for the DLL.
ftp://ftp.marshallsoft.com/pub/windows/wsc4c42.zip - 569Kb - Download - Screenshot

Windows Std Serial Comm Lib for Visual Basic
Serial communication component VB and VB. NET library (DLL) for serial port (RS-232. RS-422, RS-485) communications. Features of the Windows Serial Communications Library (WSC4VB) include: Uses the standard Windows API to communicate with any device connected to a serial port. ... Supports virtual serial ports (usb to serial converter, bluetooth serial); multi-tasking, Includes 16-bit (WSC16. ... Programmer's, Reference, Users and Serial Comm Manuals provided. ... Is port re-entrant. ... Can be used with managed code.
ftp://ftp.marshallsoft.com/pub/windows/wsc4vb42.zip - 411Kb - Download - Screenshot