thttpd

Tiny/turbo/throttling HTTP server with CGI support

thttpd is a simple, small, portable, fast, and secure HTTP server. - Simple: It handles only the minimum necessary to implement HTTP/1.1. - Small: It also has a very small run-time size, since it does not fork and is very careful about memory allocation. - Portable: It compiles cleanly on SunOS 4.1.x, Solaris 2.x, BSD/OS 2.x, Linux 1.2.x, and OSF/1 (on a 64-bit Alpha). - Fast: In typical use it's about as fast as the best full-featured servers (Apache, NCSA, Netscape). Under extreme load it's much faster. - Secure: It goes to great lengths to protect the web server machine against attacks and breakins from other sites. It also has one extremely useful feature (URL-traffic-based throttling) that no other server currently has.