Best B2B Data Providers for Orthogonal

Apollo is the platform for your entire end-to-end sales strategy. Sellers and marketers use Apollo to discover more customers in market, connect with contacts, and establish a modern go-to-market strategy.

People respond twice as fast to emails than Linkedin messages. They also reply in 85% less time. Our AI engine can find emails for 75% in the west. This is two times more than any other competitor. Our Chrome extension works with LinkedIn and Github and helps you find email addresses and phone numbers. Connect with the people your business needs. All your saved leads are available in one place. You can organize candidates into folders and share them with your team. One click export to Excel or ATS. ContactOut's search portal allows you to find candidates instantly. You can perform unlimited searches and find candidates who are not listed on Linkedin. Engage with less effort. Use our reusable templates to send emails while browsing LinkedIn. Contact multiple people at once, and follow up automatically. One of the key features that set ContactOut apart from its competitors is its seamless integration with LinkedIn, allowing users to effortlessly find personal email addresses and phone numbers of potential candidates directly from their LinkedIn profiles. The platform's impressive coverage of over 75% of professionals working in developed countries not only ensures an expansive reach but also helps users stay up-to-date.

Crustdata is the real-time data layer for teams that would rather build their own tooling than buy it off the shelf. It covers 60M+ companies and 1B+ people, pulled live from 15+ sources, and reaches every team through one API, bulk datasets, and an MCP server. The platform runs on three APIs. Search finds people and companies across 350+ filters like industry, headcount, headcount growth, funding, location, seniority, title, technology, and hiring activity. Enrich turns a domain, name, or profile URL into a full record with dozens of data points, including verified work emails and phone numbers, job history, firmographics, live and historical headcount, web traffic, funding, and company and CEO approval ratings. Watch monitors the accounts and people a team cares about and fires an alert the moment something changes, like a job switch, a new role, a funding round, or a spike in web traffic. For teams working with LLMs, the Crustdata MCP exposes all three in plain language. It connects to Claude and other AI tools so research, enrichment, and monitoring run inside agents and workflows with no code. Internal teams use Crustdata to replace generic SaaS with tooling shaped to how they actually work. Sales teams build their own prospecting and prioritization. Investment teams track founders, executives, and portfolio companies. Recruiters and agencies build sourcing tools that match the way they think. Product teams go further and ship Crustdata inside what they sell, like AI SDRs that draft outreach off live signals and recruiting agents that source and reach candidates on their own.