libcurl.mono is an object-oriented binding for the libcurl Internet client API. It supports rapid-development of powerful Internet clients in C# that can run within the mono runtime. With libcurl.mono, for example, you can develop FTP and HTTP clients without having to code down at the socket level. There are a number of sample applications to get you started.
muhttpd (mu HTTP deamon) is a simple but complete Web server written in portable ANSI C. It supports static pages, CGI scripts, and MIME type based handlers. It drops privileges before accepting any connections, and can log received requests. It has been tested on OpenBSD, GNU/Linux, NetBSD, FreeBSD, Mac OS X, and Cygwin. It runs successfully on 32-bits, 64-bit, little endian, and big endian systems.