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
Ruby/MaxL is a portable extension module for the Ruby scripting language that allows Hyperion Essbase MaxL statements to be executed from within a Ruby program.
TIDAL is a collection of data acquisition and processing tools for research in respiratory physiology. It provides a high-level language for specifying experimental protocols and required computations.