An abbreviation for “Linux Apache MySQL Perl/PHP/Python.” These group of free and open source programs are used to run many dynamic websites. Most Joomla sites run with Apache and MySQL. All run with PHP. In addition, JavaScript is now an important part of the Joomla “stack.”

A user level on a Joomla site that by default can access only the front end. Editors have privileges to post and edit content, but no permission for publishing content.