IBM Internet Technology Group chooses Drupal to deploy of a collaborative Web site. The article series describes their project requirements and why they chose Drupal among other CMS frameworks including Mambo, Typo3, Ruby on Rails, Movable Type, WordPress and TextPattern.
The open wiki/database of Open Source projects.
An open source WYSIWYG HTML authoring system for Linux, Microsoft Windows and Mac OS.
Elliot Sheppard's CMS for photographs, in use at slower.net.
A bookmark manager (del.icio.us clone) available as Open Source Perl software. Rubric is used on the de.lirio.us site.
Open source bookmarks manager using PHP/MySQL.
Open source software for Social Bookmarking, Tagging, Blogging & Notes.