While originally developed to process satellite and airborne images, MultiSpec for Mac has now found other applications such as multiband imagery for medical and educational uses. MultiSpec for Mac offers an image processing system that interactively analyzes and edits multispectral image data. While it performs well, this app would benefit from a more user-friendly interface.
There is no installation required for MultiSpec for Mac. Instead the application can be run straight out of the package you download. Once you open the app, you can choose an image to edit. Once you've opened your image of choice, you can begin editing and processing it. The app seems rather complex, and it's not for novice users. Even though the interface is very basic, it will be hard to understand how to actually use this app if you're not already familiar with multispectral image data analysis. The developer's Web site does offer tutorials and exercises that may help out and explain how to properly use all the features and settings.
This piece of software fills a niche need, so unless you are looking for an application to process and edit educational images, you'll have no use for MultiSpec for Mac.