GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching geometry, algebra, statistics, and calculus. Download the free software at http://www.geogebra.org. Find the source code at http://www.geogebra.org/trac
RightNowCMS proposes the development of dynamic web pages using environment databases, MySQL for now, or simulated dynamic NoDB virtual version. We plan to implement a set of extensions and modules for increase the functionality of your website.
babbaExplorer is a tool written in PHP which can be used to manage files on your webserver. You can use it to browse trough your webspace, create new files/directory's and upload, view, edit, rename, delete and chmod files.