SMS ActiveX to send and receive SMS from PC using a GSM modem/phone. Free demo.
Editor: SMS ActiveX component (DLL) to Send SMS and receive SMS from PC using a GSM modem.
Very simple usage in Visual Basic, ASP, C#(.NET), C++, Access(VBA) etc.

Features:

Send and receive unicode, binary, flash and concatenated SMS.
Manage SIM phonebook and messages.
Receive incoming calls Notifications or forward incoming calls to another number
Get modem information, GSM signal quality etc.
Use more than one modem at a time (up to 8).
Use the modem simulator to send and receive fake SMS - so you wont have to pay real SMS traffic costs during the software test/integration phase.

Resources for software developers
SMSLibX exposes a well-organized object library providing SMS and GSM communication functionality.

It provides a complete user manual & reference and several SMS tutorials and examples helping SMS integration into your source code.

To complete the developers kit, the SMSLibX Test Utility allows to test your installation and most software functionality. This tool is supplied together with its source code (VB6) so youll be able to use it as a reference and testing ground
for your SMS applications. you can free download SMSLibX 2.5 now.