NumWorks - The graphing calculator that makes learning math easier.
Jim - An overview of Jim capabilities
Rule of 3 Calculator - Apply the mathematical Rule of Three in an easier, faster and more practical way!
MicroDicom - DICOM viewer. MicroDicom is a free DICOM viewer. Export to the most common picture formats, movie, clipboard. It is equipped with most common tools for manipulation of DICOM images.
eMathHelp.net - Site is created to help people learn math. Includes algebra, calculus, differential equation calculators and notes with many examples.
Weasis - Weasis is a multipurpose standalone and web-based DICOM viewer.