Compare the Top Free B2B Data Providers as of March 2026

What are Free B2B Data Providers?

B2B data providers offer companies access to large sets of business-related data, which can include information on companies, contacts, industries, financials, and market trends. This data is valuable for businesses looking to expand their customer base, enhance lead generation, conduct market research, or refine their sales strategies. B2B data providers often deliver enriched contact information, company profiles, and detailed insights on decision-makers, helping businesses identify potential leads and make informed decisions. These services may include databases with direct access to contacts, industry reports, and analytics to improve targeted outreach and account-based marketing strategies. Compare and read user reviews of the best Free B2B Data providers currently available using the table below. This list is updated regularly.

  • 1
    Visual Visitor

    Visual Visitor

    Visual Visitor

    Now that you know which companies are shopping for your product or service, finding Who To Contact is easy! Our B2B Contact data set is one of the largest in the world with over 706 million contacts. You are certain to find the person you need to contact.. And their co-workers!
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    Starting Price: $299.00/month
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  • 2
    People Data Labs

    People Data Labs

    People Data Labs

    We build workforce data, so you don't have to. People Data Labs provides comprehensive workforce profiles built with quality, coverage, and depth in mind. We collect, standardize, and refresh data, so you can build innovative products.
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    Starting Price: $0 for 100 API Calls
  • 3
    ZoomInfo

    ZoomInfo

    ZoomInfo

    ZoomInfo helps companies achieve their most important objective: profitable growth. Our platform puts sales and marketing professionals in position to identify, connect, and engage with qualified prospects by giving you: - Verified Emails & Direct Dials - Intent Data & Business Scoops - Technographic Information - Company Organization Charts Integrate with the apps that matters to you. Start your free trial today.
  • 4
    Lead411

    Lead411

    Lead411

    Lead411 provides the most comprehensive and accurate information about contacts and companies available in the marketplace. We currently have over 450M contacts, within 20M companies worldwide. Through targeted filters, and Growth Intent Data, customers are able to view complete contact data profiles and find growing companies that are more likely to be in a buying cycle for adding services/solutions. Our growth intent triggers are an easy way for you to filter for companies that make the most sense to reach out to. These companies are growing and have growth indicators such as: recently funded, IPO release, revenue growth, hiring growth, new locations, hiring plans, new executive hires and more. Fueled with this information, customers can reach out directly from the platform with the built-in sales engagement tool Reach, which allows sales to send email and SMS messaging cadences and keep track of the hottest prospects. Includes a search as you go Chrome extension
    Starting Price: $99.00/month
  • 5
    Adapt

    Adapt

    Adapt.io

    Adapt.io is a B2B lead intelligence platform designed to streamline prospecting and data enrichment for sales and marketing teams. With a comprehensive database of over 250 million contacts and 12 million company profiles, Adapt.io provides accurate and up-to-date information, including direct dials and email addresses, enabling users to connect confidently with decision-makers across more than 3,000 industries. The platform offers advanced filtering options, allowing users to build hyper-targeted lists based on specific criteria such as industry, job title, location, and company size. Additionally, Adapt.io integrates seamlessly with popular CRM systems and provides a Chrome extension for real-time data access while browsing LinkedIn or company websites. By ensuring data accuracy through robust verification processes, Adapt.io helps businesses enhance their outreach efforts, improve conversion rates, and drive revenue growth.
    Starting Price: $49 per month
  • 6
    Usearch

    Usearch

    Usearch

    The Usearch web search engine is built entirely from AI-generated data. It eliminates the need to collect users’ data, such as search queries to be bootstrapped or improved. Its groundbreaking technology generates synthetic data that is identical to real users’ data, thus making it accurate, scalable, independent and truly private. Build large-scale custom web search engines. Build your own topical or domain-specific customized web search engine, such as a finance search engine, a news search engine or a large-scale search engine that concentrate on a portion of the world wide web or on the world wide web in its entirety. Enrich your app or website with data and content from billions of webpages, news articles and images with a simple API call. Integrate advanced search capabilities in minutes. Extract the main keywords from the query, get hundreds of popular similar queries and find the most popular sites relevant to the query.
  • 7
    Slintel

    Slintel

    Slintel

    Slintel, the leader in capturing technographics-powered buying intent, helps companies uncover the 3% of active buyers in their target market. Slintel evaluates over 100 billion data points and analyzes factors such as buyer journeys, technology adoption patterns, and other digital footprints to deliver market & sales intelligence. Slintel's customers have access to the buying patterns and contact information of more than 17 million companies and 70 million decision makers across the world.
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