vov (Vov's Obsessive Von-neumann) is a tool that emulates the behavior of a von Neumann machine. It is basically an interpreter that reads files in the form of memory assignments and executes the encoded instructions. The vov's instructions allow you to perform simple arithmetic data manipulation. It is a very useful tool to see if your programs work and how. You can run a vov program from a file as you would any other shell, Perl, Python, or Ruby program.
vrbroadcast is a video on demand and media distribution server. It supports hierarchical networks of servers that will automaticaly update information on the available media. It has a GUI that is only available in German, but the server was written with multi-language support in mind.
wx12Ton helps one to work with music involving twelve-note series. In particular, it displays the 48 forms of a twelve-note series, and tests series for tonal phrases. In addition, wx12Ton allows the user to list the complete set of all twelve-note series which satisfy certain criteria.
xhtml2pdf converts HTML/XHTML/XHML to PDF using the ReportLab Toolkit, the HTML5lib, and pyPdf. It supports HTML 5 and CSS 2.1 (and some of CSS 3). The main benefit of this tool that a user with Web skills like HTML and CSS is able to generate PDF templates very quickly without learning new technologies.
Xplanets is a simulator that shows a spaceship moving through the solar system. The spaceship's movements are influenced by gravity from the sun and the planets according to Newton's laws, and by the acceleration that the engines provide. The planets move around is (simplified) round orbits.
Xpovchem is a molecule viewer based on the PovRay raytracer. It takes a molecule description, converts it into a .pov file, and lets povray render the image -- thus allowing a very high rendering quality. Xpovchem includes the professional Babel molecule format converter and is a GUI frontend to Paul Thiessen's povchem console program. The package contains many samples of common mineral and organic molecules.