7 Best Alternatives to FullContact in 2026

Why look beyond FullContact

FullContact offers a suite of APIs for identity resolution and data enrichment, providing person, company, and address data to enhance customer profiles and improve business intelligence. Its core products are designed to help companies understand their customers better, personalize interactions, and streamline operations such as lead qualification and fraud detection. FullContact emphasizes compliance with data privacy regulations like GDPR and CCPA, holding SOC 2 Type II certification, which is important for businesses operating in regulated industries or handling sensitive customer data.

While FullContact provides a robust solution for many data enrichment needs, organizations may seek alternatives for several reasons. Pricing models can vary significantly among providers, potentially leading a company to explore options that offer a more cost-effective solution for their specific volume or feature requirements. The depth and breadth of data available, particularly for niche markets or international coverage, might also differ, prompting a search for a provider with more specialized or comprehensive datasets. Furthermore, integration complexity, developer documentation quality, and the availability of specific SDKs can influence a decision, as can the need for advanced features such as real-time enrichment or specialized identity graphs not fully met by FullContact's offerings.

Top alternatives ranked

1. 1. Clearbit — Data enrichment and lead intelligence API suite

   Clearbit offers a comprehensive suite of APIs for data enrichment, lead generation, and sales intelligence. Its primary focus is on providing detailed company and contact information, including firmographics, technographics, and employee data, to help businesses identify, understand, and engage their target accounts. Clearbit's APIs can enrich website visitors, leads, and customer records with over 100 data points, enabling sales and marketing teams to personalize outreach, score leads more accurately, and improve conversion rates. The platform integrates with popular CRM, marketing automation, and sales tools, allowing for seamless data flow and automated workflows. Clearbit emphasizes real-time data enrichment and a high degree of data accuracy, which is critical for dynamic sales and marketing operations.

   Clearbit is best for B2B sales and marketing teams seeking to automate lead qualification, personalize customer experiences, and gain deeper insights into their target accounts. Its extensive data points and integrations make it suitable for companies focused on account-based marketing (ABM) and improving sales efficiency. Learn more about Clearbit.

   Best for:

   • B2B sales and marketing teams
   • Account-based marketing (ABM) strategies
   • Real-time lead scoring and qualification

2. 2. ZoomInfo — Comprehensive B2B intelligence platform for sales and marketing

   ZoomInfo provides a vast B2B database and intelligence platform designed to support sales, marketing, and recruiting efforts. Its core offering includes extensive contact and company data, such as direct dial phone numbers, email addresses, job titles, company firmographics, and technographics. ZoomInfo's platform goes beyond basic data enrichment by offering features like intent data, which identifies companies actively researching products or services, and conversation intelligence, which analyzes sales calls. The platform integrates with various CRM and marketing automation systems, providing a centralized source of truth for go-to-market teams. ZoomInfo's strength lies in its ability to provide a 360-degree view of target accounts and individuals, enabling highly targeted outreach and engagement strategies.

   ZoomInfo is best for sales, marketing, and recruiting professionals who require a comprehensive B2B intelligence platform for lead generation, market analysis, and talent acquisition. Its intent data and conversation intelligence features are particularly valuable for teams looking to prioritize outreach and optimize sales processes. Explore ZoomInfo's B2B intelligence platform.

   Best for:

   • Sales and marketing teams needing comprehensive B2B data
   • Companies using intent data for lead prioritization
   • Recruiting and talent acquisition

3. 3. Apollo.io — Sales intelligence and engagement platform

   Apollo.io combines a B2B database with sales engagement tools, offering an all-in-one platform for sales teams. It provides access to a database of over 250 million contacts and 60 million companies, complete with verified email addresses, phone numbers, and detailed firmographic and technographic data. Beyond data enrichment, Apollo.io includes features for email outreach, calling, and task management, allowing sales representatives to build sequences, automate follow-ups, and track engagement. The platform integrates with major CRMs and offers robust analytics to measure the effectiveness of sales campaigns. Apollo.io focuses on streamlining the entire sales process from prospecting to conversion, making it a powerful tool for sales development and account management.

   Apollo.io is best for sales teams and sales development representatives (SDRs) who need an integrated platform for prospecting, data enrichment, and sales engagement. Its combination of a B2B database and outreach automation capabilities makes it ideal for scaling outbound sales efforts. Discover Apollo.io's sales intelligence features.

   Best for:

   • Sales development teams and outbound sales
   • Integrated prospecting and sales engagement
   • Small to medium-sized businesses (SMBs) scaling sales

4. 4. Google Maps Platform — Geospatial data and location services

   The Google Maps Platform provides a suite of APIs and SDKs for embedding maps, adding location functionality, and visualizing geospatial data in web and mobile applications. While not a direct competitor for identity resolution, its Geocoding API and Places API can be used for address validation, converting addresses to geographic coordinates, and enriching location-based data. Developers can integrate features like interactive maps, routing, place search, and street view into their applications. The platform's extensive global coverage and continuous updates make it a reliable choice for applications requiring accurate and up-to-date location intelligence. Its use cases range from logistics and ride-sharing to real estate and local search services.

   Google Maps Platform is best for developers and businesses that require robust geospatial data, mapping capabilities, and location-based services. It is particularly useful for enriching address data, validating locations, and building applications where geographic context is central to the user experience. Explore Google Maps Platform APIs.

   Best for:

   • Applications requiring address validation and geocoding
   • Logistics, delivery, and ride-sharing services
   • Real estate and local search applications

5. 5. Shopify Admin API — E-commerce store management and data access

   The Shopify Admin API provides programmatic access to a Shopify store's data and functionality, allowing developers to build custom applications, automate workflows, and integrate with third-party systems. While primarily an e-commerce platform API, it can be used for customer data enrichment within the context of an online store. Developers can retrieve and update customer profiles, order history, product information, and inventory levels. For businesses using Shopify, this API allows for extending the platform's capabilities, such as integrating with external CRM systems for more comprehensive customer views or automating marketing segmentation based on purchase behavior. It offers both REST and GraphQL APIs, providing flexibility for different development needs.

   Shopify Admin API is best for e-commerce businesses operating on Shopify that need to extend their store's functionality, integrate with other business systems, or enrich customer data specific to their online store operations. It is not a general-purpose data enrichment tool but specialized for Shopify merchants. Learn about the Shopify Admin API.

   Best for:

   • Shopify merchants needing custom integrations
   • E-commerce customer data enrichment
   • Automating store operations and workflows

6. 6. Stripe — Payments infrastructure and financial data APIs

   Stripe provides a comprehensive suite of APIs for processing online payments, managing subscriptions, and handling financial operations. While its primary function is payments, Stripe's customer objects and metadata capabilities can indirectly contribute to data enrichment. Businesses can store customer information, payment history, and custom metadata alongside transaction data, providing a financial perspective on customer profiles. For example, a business might use Stripe's APIs to identify high-value customers based on transaction volume or segment users based on their subscription plans. Stripe also offers features like Radar for fraud detection, which uses machine learning to analyze transaction data for suspicious activity, adding a layer of risk assessment to customer profiles.

   Stripe is best for businesses that need robust payment processing, subscription management, and financial data APIs. While not a direct data enrichment service, its capabilities for managing customer payment information and transaction history can be valuable for building a more complete financial profile of users. Explore Stripe's developer documentation.

   Best for:

   • Online businesses requiring payment processing
   • Subscription management and recurring billing
   • Indirect customer data enrichment via payment history

7. 7. Okta — Identity and access management platform

   Okta provides an identity and access management (IAM) platform that helps organizations secure and manage user identities. Its APIs enable developers to integrate authentication, authorization, and user management features into their applications. While not a data enrichment service in the traditional sense, Okta's Universal Directory can serve as a centralized repository for user attributes, including contact information, roles, and group memberships. By acting as the authoritative source for identity data, Okta can contribute to a consolidated view of user profiles across different applications. Its focus on security, compliance, and single sign-on (SSO) makes it a critical component for businesses managing a large number of users and applications.

   Okta is best for organizations focused on identity and access management, user authentication, and secure access to applications. While not providing external data enrichment, it is crucial for maintaining accurate and secure internal user profiles and can be integrated with data enrichment services to centralize identity data. Learn about Okta's developer APIs.

   Best for:

   • Enterprise identity and access management (IAM)
   • User authentication and authorization
   • Centralized internal user profile management

Side-by-side

How to pick

Choosing the right data enrichment or related API depends heavily on your specific business needs, the type of data you aim to enrich, and your target audience. Consider the following factors when evaluating alternatives to FullContact:

• Primary Use Case:
  • If your main goal is B2B lead generation, sales intelligence, and comprehensive company/contact data, look at platforms like Clearbit, ZoomInfo, or Apollo.io. These excel in providing firmographic, technographic, and intent data crucial for sales and marketing.
  • For applications requiring robust geospatial data, address validation, or location-based services, Google Maps Platform is the specialized choice.
  • If you are a Shopify merchant looking to extend your store's functionality and enrich customer data within your e-commerce ecosystem, the Shopify Admin API is tailored for that purpose.
  • For payment processing and financial transaction data, Stripe is the industry leader, which can indirectly enrich customer profiles with purchasing behavior.
  • If your focus is on secure user identity management and authentication across multiple applications, Okta provides the necessary infrastructure.
• Data Depth and Coverage:
  • Assess the depth of data attributes provided. Do you need just basic contact info, or detailed insights into tech stacks, funding rounds, or job changes? Providers like Clearbit and ZoomInfo offer extensive B2B data points.
  • Consider geographic coverage. If you operate internationally, ensure the alternative provides reliable data for your target regions.
• Real-time vs. Batch Processing:
  • For immediate data enrichment during lead capture or website visits, a real-time API (offered by most B2B enrichment platforms) is essential.
  • For enriching existing CRM databases or large datasets, batch processing capabilities might be more efficient.
• Integrations and Ecosystem:
  • Check if the alternative integrates seamlessly with your existing CRM (e.g., Salesforce, HubSpot), marketing automation platforms, or other business tools. Strong native integrations reduce development effort and improve data flow.
  • Consider the availability of SDKs and quality of developer documentation to ensure smooth implementation.
• Compliance and Data Privacy:
  • For any service handling personal data, ensure the provider adheres to relevant data privacy regulations such as GDPR and CCPA. Look for certifications like SOC 2 Type II, which indicate strong security controls.
• Pricing Model:
  • Compare pricing structures, which can vary by API calls, number of records, or features. Evaluate free tiers and custom enterprise options against your projected usage and budget.