1)   Windows Std Serial Comm Lib for Visual Basic 5.0
Visual Basic RS232 serial communications library. Control multiple ports simultaneously. Includes line status/control, modem control,ASCII/XMODEM/YMODEM, virtual ports (USB to serial,Bluetooth serial, hardware/software flow control.Win64,Win32,Win16

 2)   Windows Std Serial Comm Lib for Delphi 5.0
Delphi serial port RS232/R485/RS422 communications component library. Control multiple ports simultaneously; line status/control,modem control,ASCII/XMODEM/YMODEM, virtual ports (USB to serial, Bluetooth serial, hardware/software flow control.)

 3)   Windows Std Serial Comm Lib for PowerBASIC 5.0
PowerBASIC serial port RS232/R485/RS422 communications component library. Control multiple ports simultaneously; line status/control,modem control,ASCII/XMODEM/YMODEM, virtual ports (USB to serial, Bluetooth serial, hardware/software flow control).

 4)   Windows Std Serial Comm Lib for dBase 5.0
Visual dBase serial port RS232/R485/RS422 communications component library. Control multiple ports simultaneously; line status/control,modem control,ASCII/XMODEM/YMODEM, virtual ports (USB to serial, Bluetooth serial, hardware/software flow control.)

 5)   Windows Std Serial Comm Lib for Xbase++ 5.0
Xbase++ serial port RS232/R485/RS422 communications component library. Control multiple ports simultaneously; line status/control,modem control,ASCII/XMODEM/YMODEM, virtual ports (USB to serial, Bluetooth serial, hardware/software flow control).