Zillow

Zillow.com is an online real estate community where homeowners, buyers, sellers, real estate agents and mortgage professionals find and share vital information about homes, for free. Launched in early 2006 with Zestimate values and data on millions of U.S. homes, Zillow has since opened the site to community input, data and dialogue. One of the most-visited U.S. real estate Web sites, Zillow's goal is to help people become smarter about real estate in every stage of the home ownership process -- buying, selling, remodeling and financing. The company is headquartered in Seattle and has raised $87 million in funding.