Django Resgistration App is a full-featured user registration application for Django. It takes care of user account creation, confirmation email messages, and user account settings. Registration is protected by CAPTCHAs. It can be used to easily implement user account creation features for a Web site built with Django.
OgOg.org is a Web application and site. On OgOg.org, you can rate RSS posts and receive good rankings and extra voting power when your own posts are rated as being good. You can carry your user-ranking and voting power over to other sites via OgOg's API (and your OpenID). OgOg attempts to be a useful hub in the sifting and ranking of blog posts.
PyMultimethods is a library that enables users to create multimethods (a.k.a. generic functions) in Python. In other words, you can create multiple versions of the same function/method. The one that is invoked depends on the runtime parameters. This is similar to polymorphism in the sense that the object type determines which version of the function is invoked. Multimethods go beyond the polymorphism found in conventional object oriented languages, however, because all parameters are taken into account (as opposed to only the "implied this", as in C++ or Java). PyMultimethods can also be used to "overload" a function or method.
Quantum Star SE is a browser-based space strategy and trading game played across a mapped galaxy against other players. Utilizing mining, trading, research, and production through easy-to-use tools, QS enables both broad micro-management of resources or more "aggregated" methods. Players compete, combat enemy fleets, and manage planets to become the "last man standing". No user downloads are required, and the game is free to host or play.
RapidMiner (formerly YALE) is a flexible Java environment for knowledge discovery in databases, machine learning, and data mining. Many nestable learning and preprocessing operators (including Weka) are provided. It features an XML-based graphical user interface, a plugin mechanism, and high-dimensional plotting, and provides an easy-to-use extension mechanism that makes it possible to integrate new operators and adapt the system to your personal requirements. A command line version is also included.