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.
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.
3Doku brings the traditional Sudoku game to the third dimension. In a 9x9x9 cube, 27 Sudoku schemas intersect one another along the three axis. Every 9x9 bi-dimensional schema must be solved, keeping in mind that every single cell belongs to the selected schema and also to the other two placed on the orthogonal planes. With 4 difficulty levels and 4 initial values distributions, you can customize your game and have every time a new exciting challenge to solve.
4K Video Downloader is a video and audio downloader for YouTube, Vimeo, Facebook, Dailymotion, Metacafe, and other video-sharing services. It features video quality up to 4k resolution, FLV, MP4, and MKV support, extraction of audio to the MP3 format, and a "Smart Mode" for fast downloads.
4Suite XML is a Python-based toolkit for XML application development. It features a library of integrated tools for XML processing, implementing open technologies such as DOM, SAX, XPath, XSLT, XInclude, XPointer, XLink, XUpdate, RELAX NG, and XML/SGML Catalogs. The RDF and Repository components of 4Suite are separate packages that must be installed separately, on top of 4Suite XML.