Zillow also attracts 64% of all traffic among users of listing apps, which is more than four times that of Realtor.com, its closest competitor.

Zillow's app makes finding rental apartments easy by providing comprehensive details of multiple properties. The app has an easy-to-use UI, verified listings, and access to price trends.

Zillow used to have an iBuying business called Zillow Offers, but it was shuttered in 2021. Instant buyers, or iBuyers, are companies that buy properties directly from homeowners.

Under Zillow’s policy, listings that are not entered into the MLS and available for display on sites using IDX or VOW data feeds within 24 hours of public marketing are banned from the site.