SI_COMM RS232 ActiveX Electronic Edition Cost: $189 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions SI_COMM RS232 ActiveX Electronic Edition: SI_COMM RS232 Communications ActiveX for Visual Basic, Visual C++, VB.NET, and C#. Includes its own integrated debugger,Timed Async Events,Xmodem,Ymodem,Zmodem, and more!