CollageIt - CollageIt is an easy-to-use and automatic collage maker, which makes photo collage automatically.
Saint Paint Studio - Saint Paint - The Essential Image Editor
PhotoSpills - Easy to use PC collage software with unlimited design possibilities.
Stet.io - Stet.io is a high-quality pixel management platform that allows editing the pictures with online commands or multiple options with real-time effects or filters.
Collagerator - Create amazing photo collages in few mouse clicks. Ready for download for Mac OS X and Windows.
ImageForge - - ImageForge Standard Freeware Edition: