The primary difference between Boldleads and Zillow is that Boldleads is a lead generation platform designed specifically for real estate agents, while Zillow is a comprehensive real estate platform that offers multiple services. With Boldleads, you receive leads that are exclusive to your business—allowing you to nurture relationships with potential clients without worrying about competition. And with Zillow, you get access to listing tools, marketing materials, and more services such as home valuation estimates and mortgage calculators.