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LAMP

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).

LAN

A local computer network for communication between computers; especially a network connecting computers and word processors and other electronic office equipment to create a communication system between offices.

Layers

Attribute in CSS. A rectangular section, or layer, of HTML code that can be placed on a web page by assigning X, Y, and Z coordinates, measured in pixels.

Link farm

A collection of indiscriminate, often unrelated, web sites that link to each other to artificially boost link popularity.

Link popularity

Refers to the number and quality of inbound links to a web site from other web sites. One of the highest quality inbound links is a link from a major directory such as Yahoo!.

Link rot or linkrot

A link from a search engine, directory, or other web site that results in a 404 error page after a web developer modifies a web site with new URLs or removes pages from a web server.

Linux

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

"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.