Collage Creator Lite is a very cool graphics creation tool. It allows you to create Collages with your pictures and I am amazed at how easy it is to use this application and the great results that you can get with it. The app even lets you share your results directly to Facebook.
The first thing that you have to do is add the pictures that you want to use in your Collage. They will all be thrown into a white background. This is the default color, but you can change the color or make a transparent background. You can drag the images around to position them on the screen. You can also rotate them or change their size. There are a couple of interesting features. First, you can shuffle the images as many times as you want, which moves them around randomly. Second, you can re-mix the collage, which changes the order of the pictures while keeping the layout. Third, there is a lock feature that can either lock your images, or text (you can add text, too), so that you don't change anything accidentally.
Your results can be saved as JPEG, TIFF and PNG, or shared on Facebook.
In short, Collage Creator Lite works like a charm and it can produce high-quality collages. It is currently free on the Mac App Store.