freshmeat maintains the Web's largest index of Unix and cross-platform open source software. Thousands of applications are meticulously cataloged in the freshmeat database, and links to new code are added daily.
Plone is a user-friendly powerful content management system - ideal as an intranet and extranet server, as a document publishing system, a portal server and as a groupware tool for collaboration between separately located entities.
Y. Sure, S. Bloehdorn, P. Haase, J. Hartmann, and D. Oberle. Proceedings of the 12th Portuguese Conference on Artificial Intelligence - Progress in Artificial Intelligence (EPIA 2005), volume 3803 of LNCS, page 218 - 231. Covilha, Portugal, Springer, (December 2005)
E. Oren, J. Breslin, and S. Decker. Proceedings of the 15th international conference on World Wide Web, page 1071-1072. Edinburgh, Scotland, ACM, (2006)
R. Navigli, and P. Velardi. Proc of the 15th International Conference on Knowledge Engineering and Knowledge Management (EKAW 2006), LNAI, 4248, page 126-140. (2006)