PhotoSpills - Easy to use PC collage software with unlimited design possibilities.
CollageIt - CollageIt is an easy-to-use and automatic collage maker, which makes photo collage automatically.
Collagerator - Create amazing photo collages in few mouse clicks. Ready for download for Mac OS X and Windows.
Snap2IMG - Snap2IMG generates contact sheets (also known as thumbnail sheets or image index) for folders on...
Posterino - Rather than let those photos on your hard drive collect digital dust, use Posterino to create a beautiful collage.
ShapeX - Shape Collage generator - Photos & Graphics