Imagus - The extension is intended to complement image features that (I think) is missing from Opera by...

Image Hunter - Image Hunter – Search By Image is a tool that allows you to upload an image or images directly from your mobile device and find all the other existing sources of the image on Google.

Image Max URL - Help find larger or original versions of images, including a customizable image popup feature

Good Night Gif - Good Night Gif is a collection of best Good Night animated gifs app that is easy to share with friends in social networks.

Thumbnail Zoom Plus - The official site of the Thumbnail Zoom Plus add-on for Firefox

JS Image Finder - JS Image Finder: Image Search is a powerful, simple, and easy to use application that allows you to search for images from the internet using popular search engines.