Wikimedia Commons Search — Upollo

Created especially for Wikipedia editors, this add-on makes it easy to find media on http://commons.wikimedia.org related to your article without having to laboriously open a new tab, then open wikimedia, then type in a search term ... simply highlight some relevant text in your editing page (either in the editing box or elsewhere in the page), right click and select "Search for media related to the highlighted text on Wikimedia Commons". A new tab will open in commons.wikimedia.org with your search results.