Web Server
Apache is the oldest and most popularly used web server software. It has a robust set of features and modules, with common modules like mod_perl and mod_php that embed script interpreters into the Apache server. Unfortunately we still run into a fair bit of legacy code which is tightly bound to the behaviour of the original Apache1 APIs, despite Apache2 having been in production use for more than six years!
Depending on an application's deployment requirements, there may be more suitable web server alternatives to consider such as LigHTTPd.
See httpd.apache.org for more information, or contact us if you would like some commercial assistance.
