Yotophoto searches free-to-use photos

Yotophoto is a search engine for free-to-use stock photographs and images. These are images that are either in the Public Domain or released under generous Creative Commons, GNU FDL or similar licenses.

Originally an experiment to facilitate easier image searching of the Wikipedia, Yotophoto eventually expanded to index other well known free image sites. The index includes over a quarter million free images.

The image index can be searched by color by using a color picker or by entering hex values!