Zillow is an online real estate company that provides a platform for buying and selling properties, as well as resources for finding rentals and mortgage lenders. Based in Seattle, Washington, Zillow was founded in 2006 and has since become one of the largest real estate websites in the United States. The company also offers tools for homeowners to estimate the value of their homes and to access a wealth of data on real estate trends and market conditions. Zillow’s mission is to make the process of buying, selling, and renting a home more transparent and efficient for everyone involved.