Digg

Digg is a community-based popularity website with an emphasis on technology and science articles, recently expanding to a broader range of categories such as politics and entertainment. It combines social bookmarking, blogging, and syndication with a form of non-hierarchical, democratic editorial control.

PHPdug

PHPdug is a script similar to Digg.com. This digg clone script is fast and constantly being improved. And the best of all, it is 100% Free! Feature List Easy to edit html template files Spam fighting captcha security codes Simple wizard ...

Pligg CMS

Pligg is an open source CMS (Content Management System) that you can download and use for free. Pligg CMS provides social networking software that encourages visitors to register on your website so that they can submit content and connect with other u ...