LeadGenius

Clearbit builds business intelligence APIs. Retrieve social data from emails and look up company information from domains.

FullContact offers developers powerful contact management APIs to you turn partial contact information into full contact data. Query by email, phone, or company domain and receive rich company data in response.

It is an app that makes it fast and easy to add a new contact or look up an existing one. It works on both the iPhone and iPad, and it’s simple enough to use that it may actually make you want to manage your contacts.

Datanyze crawls millions of the web's top websites to determine which web technologies they use, then serves that data to its users in valuable ways.

It provides powerful APIs to automate common dev tasks. We make it easy to validate emails, geolocate IPs, calculate VAT, compress images and more. We focus on an awesome dev experience with top documentation and support, and provide free and paid plans.

MTN DATA is a powerful data verification and enrichment platform designed for businesses that rely on accurate professional and company information. It provides real-time API checks, batch processing, and AI-driven enrichment to ensure every record is complete, validated, and trustworthy.