Is Concrete5 The Right CMS For Your Website?
10 Promising Content Management Systems
ResourceSpace: Open Source Digital Asset Management (DAM)
ResourceSpace is a web-based, open source digital asset management system which has been designed to give your content creators easy and fast access to print and web ready assets.
Duplicate Annihilator
Duplicate Annihilator takes on the time consuming task comparing the images in your iPhoto library using effective algorithms to make sure that no duplicates escapes. When found the duplicate will either be marked with a description of your choice to make it searchable or simply moved to iPhotos trashcan.
Open Atrium
Intranet, open source, built on Drupal with some nifty features. Looks nice too.