lighttpd (pronounced “lighty”)
lighttpd is Lightweight open-source webserver compared to other web-servers.This is perfect for high load websites.Some popular websites like Youtube,wikipedia and meebo are powered by lighttpd.Click here for more sites.
FastCGI, SCGI, Auth, Output-Compression, URL-Rewriting
nginx (pronounced “engine x”)
nginx is a HTTP and reverse proxy server, as well as a mail proxy server written by Igor Sysoev.
Accelerated reverse proxying with caching
load balancing and fault tolerance
SSL and TLS SNI suppor
Name-based and IP-based virtual servers
Keep-alive and pipelined connections support
The rewrite module
Access control based on client IP address and HTTP Basic authentication
The PUT, DELETE, MKCOL, COPY and MOVE methods