Lighttpd,nginx and Litespeed


Lighttpd

    Brief info: Pronounced “Lighty”, Lighttpd is as the name implies a small, lightweight web server which has a low memory footprint and light CPU load. Lighttpd is a good alternative to serve static content but it has also gained recognition in the Ruby on Rails and PHP communities.
    Used by: Wikimedia (Wikipedia), Sourceforge, YouTube, The Pirate Bay, Meebo, Imageshack, Sendspace, Mininova.
    Cost: Free
    Open Source: Yes
    OS platforms: Linux, freeBSD, Solaris, MacOS X, Windows (under Cygwin)
    Homepage: www.lighttpd.net

Nginx

    Brief info: Pronounced “engine X”, Nginx is a lightweight web server and reverse proxy. Originally written by Igor Sysoev for Rambler.ru (Russia’s second most visited website). Nginx is known for stability and simple configuration in addition to its low resource consumption. It can also act as an IMAP/POP3 proxy.
    Used by: Yellow Pages, Hulu, Zimbra, the Friends for Sale Facebook app, Rambler, and it also seems that WordPress.com just started using it instead of LiteSpeed.
    Cost: Free
    Open Source: Yes
    OS platforms: Linux, FreeBSD, Solaris, MacOS X
    Homepage: www.nginx.net

LiteSpeed

    Brief info: LiteSpeed is a commercial web server designed specifically for large websites. One of LiteSpeed’s advantages is that it can read Apache configurations directly which makes it easy to integrate with existing products to replace Apache. The server is lightweight and as the name implies very fast.
    Used by: WordPress (until recently at least, but now WordPress.com appears to be using nginx), Twitter, GigaOm, Bravenet.
    Cost: Free to $1,299 depending on the edition.
    Open Source: No
    OS platforms: Linux, FreeBSD, Solaris, MacOS X
    Homepage: www.litespeedtech.com


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