Diff.NET 

Diff.NET is a differencing utility I wrote in C#.  It provides side-by-side differencing for files and directories.  For files it also provides an overview diff and a line-to-line diff.

90% of the functionality of Diff.NET is provided by public classes in the MeneesDiffUtils library.

Supported Charity

Any Charity of your choice, including those supported by charity-ware.org.