I am looking for an open source social bookmarking site CMS so I can build a site like delicious with it for my organization. This will be deployed in the internal LAN.
Do you have any recommendations?
How about http://www.drigg-code.org/
Based on drupal, it's basically a digg clone.
Example website based on drigg : http://www.fsdaily.com/
Why not using Pligg CMS. If you want to learn how to install Pligg on your website, click here.