www.fsf.org
    The Free Software Foundation (GNU).

CVS home
    The CVS project, which is our backend data storage. We recommend jCVS for a frontend. In the future we plan to move our repositories to Subversion.

FreeEngineer.org
    Site dedicated to development of free/open source engineering software tools.

OpenCores.org
    OpenCores is bringing open source to chip design.

Simputer.org
    Open designed headheld computer.

Open source CAD: QCad, LignumCAD, and Free-CAD

Open source modeling kernel: OpenCascade

Open source analysis: OpenOffice.org, Gnumeric, Scientific Tools for Python (SciPy), Octave, SciLab, and Euler.