molesys http://molesys.sourceforge.net
Client side : Mozilla Firefox extension (model in C++ / XPCOM, view in XUL, controler in Javascript) Server side : Server XML-RPC (PHP + MySQL) Realized during my first year of Master at the University of Science and Technologies of Lille, France (USTL), with my friend Remi Melisson and supported by Lionel Seinturier, researcher at this university.Molesys is a network designed for easy communication and exchange between users. It's main goal is to facilitate every step of a resource transfer, since its recuperation on a network. By resources, we mean bookmarks, links, documents, notes, podcast, images...
The client implementation is built as a Firefox extension, that allow you to benefit to a well integrated application into the navigator, so you can very easily share every things you get from Internet.
Communications are realized by XML-RPC. The server is written in PHP, using a MySQL database to store the network state.
More informations on the Sourceforge website.