filed , by Roy Keene, is a BSD-licensed simple and above all else fast HTTP server for serving local static files over HTTP from Linux. It does the least amount of effort possible to get to the point of handing the actual transfer over to the kernel. It is multithreaded where every thread services a single concurrent client. It attempts to reduce latency by caching open file descriptors as well. Implemented in C. Designed to be easily ported to other operating systems.