PhotoSpills - Easy to use PC collage software with unlimited design possibilities.
GIMP - GIMP is a multiplatform photo manipulation tool.
CollageIt - CollageIt is an easy-to-use and automatic collage maker, which makes photo collage automatically.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Snap2IMG - Snap2IMG generates contact sheets (also known as thumbnail sheets or image index) for folders on...
ShapeX - Collage - Free Shape-Collage Generator! – (v1.1) Save Example Images & New Examples !