Fantastico

Free Instant script install, Easy Upgrades, Very Popular.

With a click of the mouse, you can instantly install the following scripts without any programming knowledge:

Blogs
b2evolution
Nucleus
WordPress

Content Management
Drupal
Geeklog
Joomla 1.5
Joomla
Mambo Open Source
PHP-Nuke
phpWCMS
phpWebSite
Post-Nuke
Siteframe
TYPO3
Xoops

Customer Relationship
Crafty Syntax Live Help
Help Center Live
osTicket
PerlDesk
PHP Support Tickets
Support Logic Helpdesk
Support Services Manager

Discussion Boards
phpBB
SMF

E-Commerce
CubeCart
OS Commerce
Zen Cart

F.A.Q.
FAQMasterFlex

Hosting Billing
AccountLab Plus
phpCOIN

Image Galleries
4Images Gallery
Coppermine Photo Gallery
Gallery

Mailing Lists
PHPlist

Polls and Surveys
Advanced Poll
LimeSurvey
phpESP

Project Management
dotProject
PHProjekt

Site Builders
Pro Edition
Templates Express

Wiki
TikiWiki
PhpWiki

Other Scripts
Dew-NewPHPLinks
Moodle
Noahs Classifieds
Open-Realty
phpAdsNew
PHPauction
phpFormGenerator
WebCalendar