"Most Free Software users are familiar with the Linux/Apache/MySQL/PHP stack--the LAMP configuration--a widely deployed set of software used for a large number of Internet and intranet applications. Although the LAMP configuration is the most frequently used, it's not always the best tool for any given job. This article proposes some alternatives.
"A number of free UNIX-like operating systems are available, with varying licenses. These include various BSD flavors and, recently, Solaris..."