oSkope visual search is a free online service developed by oSkope media group in Zurich and Berlin. Will search YouTube, Flickr, Yahoo! Image Search, and others.

Spell words using images from Flickr.

A search engine for Flickr.

The key goals of The Commons on Flickr are to firstly show you hidden treasures in the world's public photography archives, and secondly to show how your input and knowledge can help make these collections even richer.