QuickFIX is the worlds first Open Source C++ FIX (Financial Information eXchange) engine, helping financial institutions easily integrate with each other. The SVN repository is now locked. Latest code is hosted at github. https://github.com/quickfix/quickfix
WideStudio is an Integrated Development Environment (IDE) for building window applications in C++, Ruby, Python an Perl for Windows, MacOSX, Linux, FreeBSD, SOLARIS and other unix and BTRON and T-Engine. This is open and free (under MIT/X Consortiun Lice
Hyper Estraier is a full-text search system. It works as with Google, but based on peer-to-peer architecture. Using Hyper Estraier, we can construct a large-scaled search engine with cheap computers.
A converter of music from Sibelius to LilyPond.
Breeze is a build and test automation framework for software developers. It is written in Ruby and can be extended to include tasks that interact with other tools such as source code repositories, compilers, test frameworks, and installers.
A national virtual bridge engineering contest for kids of all ages.
A national virtual bridge engineering contest with prizes for middle and high school kids, grades 6 to 12, but anyone can enter for fun. Based on the award-wining Bridge Designer client software, now open source through this project. Web site infrastructure supports worldwide participation in qualifying and semifinal rounds with a tiny administrative staff. The new Rails back end is a RubyMine project. Thanks to JetBrains for this awesome development environment!
Diakonos is a Web Portal (Content Management System), Groupware and Administrative tool for churches and communities. The goal is a tool which publish information, integrate people and help in the administration of resources.
NetHack made ready for internationalization
Vanilla NetHack, made ready for internationalization.
** The OpenStudio Legacy Plug-in has been relaunch as Euclid by Big Ladder Software, please see the new homepage: http://bigladdersoftware.com/projects/euclid/ ** The Legacy OpenStudio SketchUp Plug-in makes it easy to create and edit the building geometry in your EnergyPlus input files. Note that active development has moved to the more comprehensive OpenStudio suite of tools and libraries at https://www.openstudio.net/.
The Bitchun Society is a global distributed real-time reputation tracking system. It is implemented as a plugin for Skype that is a layer on top of Skype's p2p network to communicate opinions and calculate the relative reputations of all participants.