OpenStereo is an open source, cross-platform software
for structural geology analysis.

The software is written in Python, a high-level,
cross-platform programming language and the GUI is
designed with wxPython, which provide a consistent look
regardless the OS.
Numeric operations (like matrix and linear algebra) are
performed with the Numpy module and all graphic capabilities
are provided by the Matplolib library, including on-screen
plotting and graphic exporting to common desktop formats
(emf, eps, ps, pdf, png, svg).