Serial Port Control is an inexpensive royalty-free component. It supports VB, VB.Net, C#, Borland Delphi, Borland Builder. Just put it on a form and you've got all the functionality you need to access an RS232 port.
Developer: FabulaTech, Inc.
Free to try; $29.95 to buy | Windows 95/98/ME/NT/2000/XP
Creates virtual COM ports directly from your own programs and fully control them! Provide interaction between serial communications applications and your program! OEM license allows you to distribute this ActiveX control as a part...
Developer: FabulaTech, Inc.
Free to try; $199.95 to buy | Windows NT/2000/XP
Create virtual serial port directly from your application and work with it. Full serial port software emulation. Created virtual serial port looks like real serial port for other Windows applications. Compatible with VB, VC++, C++...
Developer: ELTIMA Software GmbH
Free to try; $179.95 to buy | Windows 98/ME/NT/2000/XP
Virtual Serial Port ActiveX CE is a powerful advanced ActiveX Control for Embedded platforms that allows your software to create custom additional virtual serial ports in Windows CE system and fully control them from within your o...
Developer: ELTIMA GmbH
Free to try; $99.95 to buy | Windows