The Web Font Combinator
Extracted Page: http://font-combinator.com/The Web Font Combinator
Catchy name, no? This tool was created in order to preview web font combinations. There have been various printed collections of font examples that the reader can combine in order to see how a header and body font work together. However, there were no tools on the web that replicated this behavior that also used current web font technologies.
Directions: You can edit any of the text on this page, then select the font family you would like to preview.
Currently this tool only uses fonts supplied by the Google Font Directory, as well as a handful of common system fonts.