- LAMP (Linux/Apache/MySQL/PHP) is a popular Open Source Website platform combination of Operating System (Linux), Web server (Apache), database (MySQL) and scripting language (PHP).
- An Open Source computing platform based on the robust core of commercial Unix systems. Developed by a Finnish programmer named Linus Torvalds in the early 90's, the Linux core is typically distributed with hundreds of other 'packages', commonly known as GNU/Linux. There are dozens of popular distributions (or 'flavours') of GNU/Linux such as the popular RedHat, Mandrake, Slackware and Debian. GNU/Linux is become popular because it is free, flexible and secure.
- "Localhost" is an alias for the address 127.0.0.1, an address that always indicates the local computer. This is the address that a computer can use to refer to itself. For example, when testing a Web application on the same computer as the server, you can use the address http://127.0.0.1 or http://localhost.