Diptic - Diptic is the easiest way to create beautiful photo collages and share them with friends.

Img.vision - Image hosting & video hosting for eCommerce sellers

Collagerator - Create amazing photo collages in few mouse clicks. Ready for download for Mac OS X and Windows.

BeeIMG - BeeIMG is a simple, fast, easy image sharing solution created to fill up your image sharing needs.

TurboCollage - TurboCollage - photo collage editor software. Make collages, picture piles, picture grids, montages, and mosaics on your Mac or Windows PC. Download a free trial now!

ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.