My first application on Mac OS X is a simple OpenEXR image viewer with exposure dial. Released with source for self-learning use.

The base is from http://www.mataderu.com/xphere/info/cocoa_tut03/index.html I just expanded it to load exr format and draw as bitmap.

Compiled on Mac OS X 10.5.5, excutable is in Release folder. To build the project, one will need to build ilmbase and openexr on his or her system.