Simple Spreadsheet is a webbased spreadsheet program written in Javascript, HTML, CSS and PHP. It features formulas, charts, numeric formats, keyboard navigation, etc.
PCB is an interactive printed circuit board editor for the X11 window system. PCB includes a rats nest feature, design rule checking, and can provide industry standard RS-274-X, NC drill, and centroid data output for use in the board fabrication ...
The Yahoo! User Interface (YUI) Library is a set of utilities and controls, written in JavaScript, for building richly interactive web applications using techniques such as DOM scripting, DHTML and AJAX.
RapidSVN is a cross-platform GUI front-end for the Subversion revision system written in C++ using the wxWidgets framework. This project also includes a Subversion client C++ API.