SI_COMM RS232 ActiveX Electronic Edition - SI_COMM RS232 Communications ActiveX for Vis
SI_COMM RS232 Communications ActiveX for Visual Basic and Visual C++. Includes its own integrated debugger,Timed Async Events,Xmodem,Ymodem,Zmodem, and more!
This is the Shareware version. The full version can be purchased by clicking on the "Buy Now" button below for around $189.95 USD.