Fantastico

Your web hosting features Fantastico script autoinstaller–making a huge variety of scripts available for super-easy, one-click installation and upgrades! Up-to-date versions of all these scripts can up and running on your hosting account in a snap, no tech skills required: blogs, portals, content management systems, customer support centers, forums, discussion boards, shopping carts, FAQ managers, hosting billing systems, image galleries, mailing lists, polls, surveys, project management software, sitebuilders, wikis, and more! All this software is inlcluded with your hosting plan, all free.

Hosting Auto-Install Blog Scripts

b2evolution (website)
Nucleus (website)
WordPress (website)

Hosting Auto-Install Portals/Content Mangement Systems (CMS) Scripts

Drupal (website)
Geeklog (website)
Joomla (website)
Mambo Open Source (website)
PHP-Nuke (website)
phpWCMS (website)
phpWebSite (website)
Post-Nuke (website)
Siteframe (website)
TYPO3 (website)
Xoops (website)

Hosting Auto-Install Customer Support Scripts

Crafty Syntax Live Help (website)
Help Center Live (website)
osTicket (website)
PerlDesk (website)
PHP Support Tickets (website)
Support Logic Helpdesk (website)
Support Services Manager (website)

Hosting Auto-Install Forums/Discussion Board Scripts

phpBB2 (website)
SMF (website)

Hosting Auto-Install Shopping Cart Scripts

CubeCart (website)
OS Commerce (website)
Zen Cart (website)

Hosting Auto-Install FAQ Script

FAQMasterFlex (website)

Hosting Auto-Install Webhost Billing Scripts:

AccountLab Plus (website)
phpCOIN (website)

Hosting Auto-Install Image Gallery Scripts:

4Images Gallery (website)
Coppermine Photo Gallery (website)
Gallery (website)

Hosting Auto-Install Mailing List Script

PHPlist (website)

Hosting Auto-Install Polls & Survey Scripts

Advanced Poll (website)
phpESP (website)

Hosting Auto-Install Project Management Scripts

dotProject (website)
PHProjekt (website)

Hosting Auto-Install Site Builder Scripts

Soholaunch Pro Edition (website) Free version: limited & ad-supported after trial.
Templates Express

Before you choose to build your site with a sitebuilder, know the implications.

Hosting Auto-Install Wiki Scripts

TikiWiki (website)
PhpWiki (website)

Hosting Auto-Install Other Scripts

Dew-NewPHPLinks (w/Thumbshots) (website)
Moodle (website)
Noahs Classifieds (website)
Open-Realty (website)
phpAdsNew (website)
PHPauction (website)
phpFormGenerator (website)
WebCalendar (website)

Quick Tip: A great way to test-drive most of these scripts is the Open Source CMS site, where you can read reviews and try out a whole bunch of different software! No registration required.