Check out this link on Mac App Storm:

OS X is a popular platform for professional photographers, and offers a huge range of software which can help to take better photos, streamline post-processing, sell images, and publish them for others to view. Whether you’re a complete amateur or a seasoned pro, this roundup will have something new to show you.
We’ll be covering 50 fantastic applications for various areas of photography: organizing, post-processing, geo-tagging, panoramas, HDR images, uploading/sharing images, and more.

