rexcardan 

A simple to use C# library for reading and manipulating DICOM files. What sets it apart? Ease of use and good documentation. Check out evildicom.rexcardan.com to get started.

A lightweight math library for doing common operations on vectors and matrices, Monte Carlo integration, and ray tracing.

A simple wrapper around the EPPlus library that enables quick access to Excel rows as a list of dynamic values.

A simple data library for quickly processing and handling 2D data.