Typeshift is a tool to help type and product designers test responsive typography in the browser. Our goal is to respectfully bring the two disciplines closer together. Most of the web is made up of words. The app lets people quickly try typefaces, configure them responsively and save/share lockups for seeing how things perform across different browsers and breakpoints.
via BetaList http://bitly.com/25RMG5g
by Robert Hughey (Google+)