Apollo.io
A combined B2B contact database (265M+ contacts) and sales engagement platform in one product - prospect search/filtering, email and call sequencing, and contact/organization enrichment.
Search companies by firmographics
Query a company database by industry, headcount, revenue, geo or similar and get a list back.
15 listings. Catalog build: 2026-10-17.
Which tool fits this job?
Compare the tools below against the input you have, the output you need, and the systems you already use. This list includes tools with and without MCP support.
These matches come from recorded vendor claims. They are a shortlist to investigate, not a performance ranking. A tool's overall test label does not prove it was tested for this task.
Questions this page helps you explore
- Find companies with 50 to 200 employees
- Search for accounts by industry and size
- List saas companies in germany
- Firmographic company search
Before you choose
- Check the stated capability against the exact result you need.
- Confirm coverage, freshness, limits, and total cost in the current vendor documentation.
- Test a small sample from your own workflow before committing.
- If an agent will do the work, check API or MCP access separately.
Listings are alphabetical. Open a record for dated sources and research notes.
Read this solution shortlist as JSONCognism
A B2B contact and company database and sales intelligence platform, positioned around GDPR/CCPA-compliant data for EMEA-focused selling, with a browser extension for LinkedIn/website prospecting and human-verified phone numbers ("Diamond Data").
Coresignal
Sells structured B2B datasets and APIs (company, employee/people, job-posting records) scraped and normalized from public and professional-network sources, delivered as bulk datasets or pay-per-call enrichment APIs.
Crustdata
A real-time API for company and person firmographic/growth data (headcount trends, funding, tech stack, web traffic, social signals), positioned as infrastructure for time-sensitive GTM triggers and agent-built prospecting workflows.
Crustdata
Aggregates real-time company and people data (250+ data points per company from 15+ sources - funding, headcount, web signals, social, reviews) plus a "Watcher API" for near-real-time hiring/funding/event alerts, covering 60M companies and 1B+ people.
Explorium
Aggregates roughly 50 third-party data sources into one API/platform for business and prospect lookup (firmographics, contacts, technographics, business events), claiming coverage of 150M+ companies and 800M+ contacts.
Fiber AI
B2B search and enrichment APIs for finding companies and people by structured filters or natural language, then revealing work emails and phone numbers with live LinkedIn data.
Lead411
A B2B contact and company database with verified emails, direct dials, and growth/intent triggers, queryable by search or by an enrichment API.
Ocean.io
A company-search and "lookalike" prospecting tool that finds businesses similar to a given target account based on industry, size, geography, and website content, and exports the resulting account lists.
People Data Labs
A raw person/company data API that returns profile records (name, job history, education, skills, social handles, contact fields) matched by identifiers like email, name, or LinkedIn URL, plus SQL-style bulk search over its dataset.
Prospeo
A B2B contact database/lookup tool that finds verified work emails and mobile phone numbers for a given person or domain and returns basic firmographic data (headcount, industry, tech stack) for companies; also supports filtered people/company search.
Seamless.AI
A B2B contact and company database/prospecting tool that lets users search and pull emails, phone numbers, and firmographic data from a claimed 1.9B+ contact / 121M+ company index, plus basic list-building, outreach/campaign sending, and CRM sync.
UpLead
A B2B contact database and prospecting tool (vendor claims 160M+ contacts, 95% data accuracy) for building lead lists with verified emails, direct dials, and firmographic/technographic filters, with a browser extension and CRM integrations.
Vainu
Sells a licensed database of roughly 5M Nordic registered companies with 700+ fields and around 9M decision-maker contacts, plus scraped and classified trigger events, delivered into a CRM, an API, or Excel.
ZoomInfo
A B2B contact/company database and go-to-market platform (500M+ contacts, 100M+ companies) built from web crawling, public filings, and human researchers, used for prospecting, account research, and lead enrichment.