KeiSpade is a wiki and content management system that uses HTML5 technology. It lets you upload movies or music into the sites it produces, and subsequently lets you can watch them without any plugins (like Flash or Java).
Magneato is a Content Management System (CMS) with faceted navigation and structured
pages at its core.
It was developed using the industry-standard Spring 3 framework and the Lucene search engine.
A generic memoization framework.
An anonymous Internet communication system.