i1Share is freeware that comes with your i1 products that will allow you to measure, capture, manipulate, compare, and communicate colors. The following link provides a detailed interactive tutorial containing many useful hints and tips for both Mac and PC users:
When working in i1Share, the three main functions of the software interface are found in
the tool selector in the top left corner of the screen seen here:
Within this tool selector are the main interfaces of the software.