Fantastico 2.5 De Luxe is an amazing CPanel/PHP based Web application. It integrates with CPanel and gives you the ability to automagically install following Open Source Applications:

Blogs:
b2 (0.6.1) (visit site)
b2evolution (0.8.6) (visit site)
Nucleus (2.0) (visit site)
pMachine Free (2.3) (visit site)
WordPress (1.0) (visit site)

Portals/CMS:
Drupal (4.3.2) (visit site)
Geeklog (1.3.8-1sr3) (visit site)
PHP-Nuke (6.8) (visit site)
phpWebSite (0.9.3-2 english) (visit site)
Post-Nuke (0.7.2.6-1) (visit site)
Siteframe (3.1.2) (visit site)
Xoops (2.0.5.2) (visit site)

Customer Support:
Crafty Syntax Live Help (2.7) (visit site)
Help Center Live (1.1) (visit site)
osTicket (1.2.5) (visit site)
PHP Support Tickets (1.7) (visit site)
Support Logic Helpdesk (1.1) (visit site)
Support Services Manager (1.0b) (visit site)

Discussion Boards:
Invision Board (1.3) (visit site)
phpBB2 (2.0.6c) (visit site)
YaBBSE (1.5.4) (visit site)

E-Commerce:
CubeCart (2.0.1) (visit site)
OS Commerce (2.2 MS2) (visit site)

Image Galleries:
4images Gallery (1.7) (visit site)
Gallery (1.4.1) (visit site)

Mailing List:
PHPlist (2.6.5) (visit site)

Project Management:
PHProjekt (4.1) (visit site)
dotProject (1.0.1) (visit site)

Other Scripts:
Moodle (1.1.1) (visit site)
Noah's Classifieds (1.3) (visit site)
Open-Realty (1.1.4) (visit site)
phpAdsNew (2.0) (visit site)
PHPauction (2.1) (visit site)
phpFormGenerator (2.05) (visit site)
phpLinks (2.1.2) (visit site)
WebCalendar (0.9.42) (visit site)