Zillow

The Zillow API is a collection of web services provided by Zillow that let developers programmatically access property listings, valuation data (Zestimate), and other property-related information. Access to the APIs requires registration and is governed by Zillow's terms of use.

Realtor.com is an online real estate listing website operated by Move, Inc. (a subsidiary of News Corp) that provides property listings, home-value estimates, and tools for buyers, sellers and renters. The Realtor trademark is owned by the National Association of Realtors and licensed for use on the site.

ZoomInfo is a go-to-market platform for B2B sales, marketing, recruiting, and revenue-operations teams. It combines business contact and company data with firmographic, technographic, and intent signals to help identify target accounts, estimate revenue potential, find decision-makers, and prioritize outreach. The platform provides people and company search, account intelligence, AI-assisted insights, lead and data enrichment, account scoring, territory management, CRM synchronization, and workflow automation. Its data is gathered through proprietary technology, machine learning, public sources, and a contributory network, and the service integrates with CRM, sales-engagement, and marketing platforms.

LoopNet is an online marketplace for commercial real estate listings, allowing brokers, agents and property owners to list and search for properties for sale or lease. The service is owned by CoStar Group and focuses on U.S. and international commercial property markets.

Zinley is a personal representative service that acts on a user’s behalf in personal matters, sales, customer support, recruiting, and related interactions. It integrates with the user’s tools and communicates with people and external systems outside those tools.