XModem/YModem/ZModem/Kermit .Net Control - Windows Shareware $699. MegaPipe .Net Control is a reliable and powerful 100% managed code component for handling serial communication, modem operations and file-transfer (XModem Checksum, XModem CRC, XModem 1K, YModem, YModem-G, ZModem and Kermit). It can be used in any .Net environment such as VB.Net, C#.Net and Delphi.Net.