FTKernelAPI is a p2p file-sharing library fully compatible with Bittorrent, which is one of the most popular p2p protocol designed for high-speed distribution of 100MB or GB sized files. FTKernelAPI is a powerful, fast, and easy-to-use bittorrent library. It supports simultaneous downloads, download queue, selected downloads in torrent package, fast-resume, disk cache, speed limits etc. BitZam is a demo, tell you how to use FTKernelAPI library. You needn't to pay a attention to networking programing and BitTorrent protocol, can quickly develop yourself BitTorrent program based on FTKernelAPI library. FlashBT is a famous BitTorrent client, based on FTKernelAPI library, developed from 2004. About 1 million users today use FlashBT. So, FTKernelAPI is very powerfull and stable, The author of FTKernelAPI is working to make it best everyday. Any one, have experience on networking program, can easily develop a program based on FTKernel, in Visual C++, Visual Basic, Delphi, C++ Builder languages.