Company OSINT Tools Reference¶

Business Intelligence Databases¶

Startup & Tech Intelligence¶

Crunchbase (crunchbase.com)

Purpose: Startup and tech company database
Data Available: Funding, investors, acquisitions, leadership
Cost: Free (limited), Pro ($29/month), Enterprise (custom)
Coverage: 3M+ companies globally

PitchBook (pitchbook.com)

Purpose: PE/VC deal database
Data Available: Valuations, M&A, fund performance
Cost: ~$10,000-30,000/year institutional
Coverage: 3M+ companies, 10K+ investors

AngelList (angel.co)

Purpose: Startup platform
Data Available: Startups, funding, investors
Cost: Free

General Business Intelligence¶

ZoomInfo (zoominfo.com)

Purpose: B2B intelligence
Data Available: Companies, contacts, org charts, technographics
Cost: $15,000+/year enterprise
Coverage: 100M+ contacts, 14M+ companies

Bloomberg Terminal (bloomberg.com/professional)

Purpose: Financial data platform
Cost: ~$20,000-25,000/year
Coverage: Complete global financial markets

Free Business Registries¶

OpenCorporates (opencorporates.com)

Purpose: Company data aggregator
Data Available: Registration, officers, status
Cost: Free (basic), API (paid)
Coverage: 200M+ companies, 130+ jurisdictions

SEC EDGAR (sec.gov/edgar)

Purpose: US public company filings
Data Available: 10-K, 10-Q, 8-K, proxy statements
Cost: Free
API: Available (free)

Domain & DNS Intelligence¶

DomainTools (domaintools.com)

Purpose: Domain research
Data Available: WHOIS history, DNS, screenshots
Cost: $99/month+
Features: Reverse WHOIS, monitoring

SecurityTrails (securitytrails.com)

Purpose: DNS intelligence
Data Available: Historical DNS, subdomains, certificates
Cost: Free (limited), Explorer ($49/month)
Coverage: 4B+ DNS records

crt.sh (crt.sh)

Purpose: Certificate transparency search
Use Case: Subdomain discovery
Cost: Free
Search: %.company.com

DNSDumpster (dnsdumpster.com)

Purpose: DNS reconnaissance
Data Available: Subdomains, MX, network map
Cost: Free

Network & Infrastructure¶

Shodan (shodan.io)

Purpose: Internet device search
Data Available: Ports, services, vulnerabilities
Cost: Free (limited), Membership ($59/month)
Search Filters: org:, net:, ssl:, port:

Censys (censys.io)

Purpose: Internet scanning
Data Available: Hosts, certificates, services
Cost: Free (limited), Teams ($99/month)

IPinfo (ipinfo.io)

Purpose: IP geolocation
Data Available: Location, ASN, company
Cost: Free (50k/month), Basic ($49/month)

Technology Profiling¶

BuiltWith (builtwith.com)

Purpose: Technology detection
Data Available: Tech stack, hosting, analytics
Cost: Free (limited), Pro ($295/month)
Coverage: 670M+ websites

Wappalyzer (wappalyzer.com)

Purpose: Technology detection
Data Available: CMS, frameworks, analytics
Cost: Free (extension), Credits ($49/month)
Technologies: 3,000+ tracked

Employee & People¶

LinkedIn (linkedin.com)

Purpose: Employee enumeration
Data Available: Team, org structure, hiring
Cost: Free (limited), Sales Navigator ($80/month)

Glassdoor (glassdoor.com)

Purpose: Employee reviews
Data Available: Reviews, salaries, culture
Cost: Free

Hunter.io (hunter.io)

Purpose: Email finder
Cost: Free (50/month), Starter ($49/month)

News & Press¶

Google News (news.google.com)

Purpose: News aggregation
Cost: Free

PR Newswire (prnewswire.com)

Purpose: Press release archive
Cost: Free (search)

Competitive Intelligence¶

SimilarWeb (similarweb.com)

Purpose: Website traffic analytics
Data Available: Traffic, sources, competitors
Cost: Free (limited), Pro ($167/month)

SEMrush (semrush.com)

Purpose: SEO intelligence
Data Available: Keywords, backlinks, traffic
Cost: Pro ($120/month)

Historical & Archive¶

Wayback Machine (archive.org)

Purpose: Historical snapshots
Coverage: 670B+ web pages
Cost: Free

Tool Selection Matrix¶

Basic Company Research¶

Start: Website, LinkedIn, Crunchbase, OpenCorporates
Free: SEC EDGAR (if public), Google search
Tech: BuiltWith, Wappalyzer

Technical Infrastructure¶

Domain: DomainTools, DNSDumpster, SecurityTrails
Network: Shodan, Censys, IPinfo
Tech stack: BuiltWith, Wappalyzer

People Intelligence¶

Employees: LinkedIn, Hunter.io
Culture: Glassdoor, Indeed
Contacts: Hunter.io, company directories

Comprehensive Research¶

Business: ZoomInfo, PitchBook (if budget)
Technical: Shodan, SecurityTrails
Historical: Wayback Machine
Competitive: SimilarWeb, SEMrush

Remember: Combine multiple tools. No single tool provides complete information. Verify from independent sources.