0 A.D. (pronounced "zero ey-dee") is a cross-platform real-time strategy (RTS) game of ancient warfare. It's a historically-based war/economy game that allows players to relive or rewrite the history of ancient civilizations, each depicted at their peak of economic growth and military prowess.
The 0MQ lightweight messaging kernel is a library which extends the standard socket interfaces with features traditionally provided by specialized messaging middleware products. 0MQ sockets provide an abstraction of asynchronous message queues, multiple messaging patterns, message filtering (subscriptions), seamless access to multiple transport protocols, and more.
2-plan Desktop's free core system features Gantt charts, graphical WBS, a project breakdown structure plug-in, several project plan template making tools, human and material resources management capability, integration with a Web collaboration PM tool, and many other new project management features. Its most popular commercial plug-in is a mind mapping tool that is seamlessly integrated into the traditional linear project management tools for brainstorming, project plan templates creation, and other uses.
2D / 3D Pie Chart provides both a client and server side solution for the incorporation of pie charts into Web pages. It provides versatile components so that Web authors and Java developers can easily build and publish dynamic and interactive Pie Charts. It includes many configurable features and functions for both applet and servlet development, and the documentation and examples are designed to give both a full understanding of every feature and enable you to implement both the applet and servlet quickly and easily.
2x2 (Two by Two) is a multiplication puzzle game. Your goal is to solve a multiplication puzzle in which all digits are replaced by letters. To achieve the best score, you should solve the puzzle with a minimal number of errors and in minimal time. 2x2 is easy to learn, but hard to master. It is simple, smart, and addicting. It will allow you to test and improve your math skills, calculation skills, logic, and even knowledge of probability theory. With a large number of possible combinations, no two games will be the same.