What is Skyfire? Skyfire is a PDTP client for Windows and various X11 platforms such as Linux, *BSD, MacOS X, and Solaris. PDTP provides BitTorrent-like content distribution through a network of peers, but operates on filesystem heirarchies in a way more like existing file transfer protocols, such as HTTP or FTP. Skyfire is written in C++ and C using the Qt cross-platform GUI library and libpdtp, the PDTP client library. Skyfire is distributed under a derivative of the Apache License.