Content Management

• Joomla
• Drupal
• Xoops
• phpWebsite
• Mambo
• GeekLog
• glFusion

Blogs

• WordPress
• Nucleus
• b2evolution

Classifieds

• Noah's Classified

Helpdesk

• Help Center Live
• osTicket

Misc

• phpAuction
• OpenX ad server
• Open Realty
• FestOS
• PhpGedView
• OpenMRS

Education

• Moodle
• eFront (OSCMS)
• Ilias (OSCMS)
• Open Journal Systems (OSCMS)

Groupware

• collabtiv
• tine 2.0
• project pier
• SugarCRM
• OpenBravo