Photo collage online?

There is an old program called AutoCollage 2008 from Microsoft Research that is still available to purchase for $19. It looks like Microsoft Research did some work on the project, then went on to newer and better things, so this software is not being updated. I tried it out back when it was still a free download, and created a few collages for friends as presents. It can merge up to 50 images, and does so by blurring the edges together. The user has little control. If you don't like the result, you can have AutoCollage create a new verson. I just downloaded the trial version (works with Windows 8.1) and merged 10 FilterForge images to give you an idea of what it looks like. It may not be what you are looking for, but it is the only collage software I have ever tried out.