Zillow Group, Inc.
A residential real estate platform that helps people buy, sell, rent, and finance homes across the U.S., anchored by its Zestimate home-value model and tools like Zillow Home Loans, Premier Agent, and ShowingTime. It was co-founded in 2006 by former Microsoft and Expedia executives Rich Barton and Lloyd Frink, who named it by blending "zillions" (the data points) and "pillow" (the personal side of home).