Blogs:
b2evolution (3.3.3-stable) (website)
Nucleus (3.51) (website)
WordPress (2.9.2) (website)

Classifieds:
Noah’s Classifieds (V8 (3.2.0)) (website)

Portals/CMS:
Drupal (6.15) (website)
Geeklog (1.5.1) (website)
Joomla 1.5 (1.5.15) (website)
Joomla (1.0.15) (website)
Mambo Open Source (4.6.5) (website)
PHP-Nuke (7.9) (website)
phpWCMS (1.4.2 r345) (website)
phpWebSite (1.6.3) (website)
Siteframe (3.2.3) (website)
TikiWiki CMS/Groupware (4.1) (website)
Typo3 (4.2.10) (website)
Xoops (2.3.3b) (website)
Zikula (1.1.1) (visit site)

Customer Support:
Crafty Syntax Live Help (2.16.8) (website)
Help Center Live (2.1.7) (website)
osTicket (1.6 RC5) (website)
PerlDesk (4.012.2) (Commercial, needs license) (website)
PHP Support Tickets (1.9) (website)
Support Logic Helpdesk (1.2) (website)
Support Services Manager (1.0b) (website)

Discussion Boards:
phpBB (3.0.6) (website)
SMF (1.1.11) (website) 

E-Commerce:
CubeCart (3.0.17) (website)
OS Commerce (2.2 Release Candidate 2a + buySAFE) (website)
Zen Cart (1.3.8a [Patched]) (website)

FAQ:
FAQMasterFlex (1.51) (website)

Hosting Billing:
AccountLab Plus (2.8 r14) (Commercial, needs license) (website)
phpCOIN (1.6.4) (website)

Image Galleries:
4images Gallery (1.7.7) (website)
Coppermine Photo Gallery (1.4.25) (website)
Gallery (2.3) (website)

Mailing List:
PHPlist (2.10.10) (website)

Polls and Surveys:
Advanced Poll (2.03) (website)
LimeSurvey (1.87+) (website)
phpESP (2.1.1) (website)

Project Management:
PHProjekt (5.2.2) (website)
dotProject (2.1.2) (website)

Site Builders:
Soholaunch Pro Edition (4.9.3 r17) (Commercial, needs license) (website)
Templates Express (website)

Wiki:
PhpWiki (1.2.11) (website)

Other Scripts:
Dew-NewPHPLinks (2.0.1.0b SEF w/Thumbshots) (website)
Moodle (1.9.7) (website)
Open-Realty (2.5.8) (website)
OpenX (2.8.1) (website)
PHPauction (3.2) (website)
phpFormGenerator (2.09c) (website)
WebCalendar (1.2.0) (website)