Just because it is free doesn't mean you don't have to cite it..
Tools
Are you writing a poem or maybe a card and can't find a word that rhymes? Use this great tool..
Dictionary & Thesaurus
For Youtube Videos Over 2 Hours Long or shorter. Converts Youtube to audio MP3. No ads..
A general resource for academic writers. It aims to provide you with examples of some of the phraseological ‘nuts and bolts’ of writing organised according to the main sections of a research paper.
ICO Convert is a free online icon maker and favicon generator, with it you can make icons from png or jpg images, just upload a photo of yourself, resize and crop it, convert to a shape you like, add borders and shadows, and save it as a PNG image or Windows icon.
New York City Public Library Digital Collection - Explore 913,922 items digitized from The New York Public Library's collections. This site is a living database with new materials added every day, featuring prints, photographs, maps, manuscripts, streaming video, and more.
Wikipedia's listing of hundreds of sites that have copyright free images from around the world.