Mosaikify

Mosaikify is a photo-editing tool that lets you transform any of your pictures into a mosaic by using all the images you want.

This application in particular shows all the tiles that will make up the image spread out on the canvas, making it really colorful.

Mosaikify includes a magnifying glass that lets you view each of the individual images that make up the final mosaic effect so you can see the details of the full creation of the mosaic.

The application has a really simple interface, and lets you select the images you want to use from your PC, organizing them by color when you're creating the mosaic.

Mosaikify is, in short, a great tool for creating this type of picture in a really easy way.