Electowidget is a PHP library (initially a plugin for MediaWiki) designed to make it possible to conduct Internet polls and elections using many different voting systems, including the Schulze (Condorcet) method, instant runoff voting, approval voting, and even plain old plurality. It also assists in explaining different election methods by providing an easy way of tallying example elections and comparing the results as computed by different elections. The modular design allows for plugging in new election tallying methods, different ballot designs, and different ballot formats.
PhpMathPublisher is a system for publishing Web pages that include mathematical expressions. Webmasters only have to install some fonts as no CGI scripts or LaTeX programs are required. Each formula is transformed into an image and the generated Web pages can be displayed by all browsers. It can be easily used in a CMS, blogs, and forums.
Fract is a Web-based fractal zoomer for the Mandelbrot set. It has no advanced features, for the goal is to keep the code easy to read for someone interested in fractals. The package also includes an offline renderer that you can use to generate high resolution images of your favorite spots. You can also easily play with the color map.
The Virtual Data Center (VDC) is a digital library system "in a box" for numeric data. It provides a complete system for the management, dissemination, exchange, and citation of virtual collections of quantitative data. It provides everything necessary to maintain and disseminate an individual collection of research studies: including facilities for the storage, archiving, cataloging, translation, and dissemination of each collection. On-line analysis is provided, powered by the R Statistical environment.
Condorcet with Dual Dropping is a ranking system for deciding single or multi-winner contests (elections) using voted preference (or approval) ballot list or pairwise tally matrix. It computes the Cloneproof Schwartz Sequential Dropping (CSSD) and Tideman's Ranked Pair (RP) results for each contest round, and selects the combined CSSD and RP outcome with the lowest overall dropping cost. There are options to compute just the CSSD, RP, or Minimum Dropping Cost outcome, various optional pair rank and winner tie-breakers, and alternative measures of dropping cost (winning votes and/or margin). It comes as a console program and CGI executable.