Photosforclass.com includes built-in #creativecommons search engine. Great search engine for free images that include image citations. Safe G Rated images.
TinEye is a "reverse" search engine: you upload an image file, and it finds all the places on the Internet where that same photo (or a lightly altered version) has been found. This can be useful if you are looking for the original version of a picture (rather than someone's repost).
While burying yourself in the stacks at the library is one way to get some serious research done, with today’s technology you can do quite a bit of useful searching before you ever set foot inside a library.
"Undergraduates and grad students alike will appreciate the usefulness of these search engines that allow them to find books, journal articles and even primary source material for whatever kind of research they're working on and that return only serious, academic results so time isn't wasted on unprofessional resources."
Easy to use search engine for images. Images are pulled from a variety of sources and have liberal licenses such as Creative Commons or are in the public domain. There is a subscription fee
Blog post about the instGrok.com website.
"Using instaGrok to find information will have your students spending less time searching, and more time learning."