The Widget Jones Library is a lightweight, flexible, template-driven widget build system. It is intended to simplify creating portable widgets. Write your code once, build it with WJL, then run it on several widget platforms like Apple Dashboard, Windows Vista Sidebar, iGoogle, and more.
Pymacs is a powerful tool which, once started from Emacs, allows both-way communication between Emacs Lisp and Python. Pymacs in intended for using Python as an extension language for Emacs rather than the other way around, and this asymmetry is reflected in some design choices. Within Emacs Lisp code, one may load and use Python modules. Python functions may themselves use Emacs services and handle Emacs Lisp objects kept in Emacs Lisp space.
Profit is a clone of the board game Acquire. Players places tiles on a board to form companies, then buy stocks in those companies. As a company grows, its stock becomes more valuable. If a tile is placed that connects two companies, however, the larger one will acquire the smaller one. The winner is the one with the most money at the end of the game.
FlexiCA is a certification authority tool. It is implemented using Java and the Eclipse Rich Client Platform. FlexiCA is extensible and supports RSA, DSA, and Elliptic Curve cryptography out of the box. Other crypto-systems may be added easily, if ASN.1 structures for encoding are available. All cryptographic functions are provided by FlexiProvider.
dirogg is a small script to migrate your entire music collection to the Ogg Vorbis format. It's a recursive script, meaning that you run it from the root of your music collection, and it will automatically convert your MP3 files to Ogg Vorbis (ogg) files. If you wish, it can also remove your MP3 files after conversion.
Liquid PCB is a computer aided design application for designing printed circuit boards. Unlike other PCB CAD applications, you are not restricted to straight tracks and 45º angles. Instead, you can freely draw tracks any way you like, and the tracks themselves will move and bend as required to maintain your design rules. Vias and components are also free to move and rotate. The user interface exposes all functions through the multi-directional expanding mouse menu and the keyboard instead of through icons and menus.
Mrs is a lightweight but high performance implementation of the MapReduce programming model for parallel computation. It is optimized for computationally intensive programs, especially those which are iterative, though it is applicable to a wide range of applications. It is intended to be simple to install and use. It is written in Python, supports both Python 2 and Python 3, and has no dependencies outside the standard library. The name "Mrs" derives from the practice of referring to MapReduce programs by the title "mister" (e.g., "Mr. Wordcount").