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Head-to-head · OSINT Tools

BuiltWith vs theHarvester

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score BuiltWith #3 in OSINT Tools 8.6/10 Free plan Free plan✓ 1 of 6 features Visit BuiltWith
theHarvester #8 in OSINT Tools 7.5/10 Free plan Free plan✓ 4 of 6 features Visit theHarvester

BuiltWith leads on 0 checks, theHarvester on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreBuiltWith · 8.6/10
  • Free planboth
  • Most featurestheHarvester · 4 of 6

BuiltWith scores higher on our rubric for osint tools: 8.6 against 7.5 out of 10; our editors rank them #3 and #8.

BuiltWith is the better fit for technology-focused web reconnaissance. theHarvester is the better fit for free domain and organization reconnaissance.

  • BuiltWith fits best

    Technology-focused web reconnaissance

  • theHarvester fits best

    Free domain and organization reconnaissance

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature BuiltWith 8.6/10 Visit ↗ theHarvester 7.5/10 Visit ↗
At a glance
Editor score 8.6 7.5
Ranking #3 in OSINT Tools #8 in OSINT Tools
Best for Technology-focused web reconnaissance Free domain and organization reconnaissance
Pricing model Free plan + paid Free
Starting price $144/yr Free plan
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Browser extension Self-hosted, Cloud
Platforms Web, Chrome extension Linux, Web
Support Email, Phone Community, Docs
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features BuiltWith 1/6 · theHarvester 4/6
Social source search Not checked yet —
Domain & IP lookup Not checked yet ✓ (best)
Monitoring & alerts Not checked yet ✓ (best)
Link analysis Not checked yet Not checked yet
API access ✓ ✓
Data export Not checked yet ✓ (best)
Our review
Pros
  • Profiles website technologies and tracks historical usage.
  • Filters lead lists by technology, location, spend, and company signals.
  • Offers exports, lookup APIs, and broad CRM and data integrations.
  • Collects intelligence across search, certificate, DNS, code, and threat sources
  • Normalizes findings and lets users review evidence and hostname changes
  • Offers scheduling, a local REST API, and JSONL or SQLite exports
Cons
  • Its focus is website and company technology, not general-purpose OSINT.
  • Advanced reports and integrations require paid plans.
  • The Free plan is limited to individual website lookups.
  • Its verified focus is domain and organization intelligence, not social sources
  • Setup and interfaces can vary as the project is rapidly updated
  • Its documentation supports Linux installation; broader OS support is unverified
Our verdict

BuiltWith profiles websites to identify the technologies they use, with tools for creating and filtering technology-based lead lists. It is aimed at sales, marketing, research, and investment teams investigating companies through their web…

Read the review →

For early-stage reconnaissance in an authorized security assessment, theHarvester collects public-source intelligence about a domain or organization. It draws from categories including search engines, certificate transparency logs, DNS…

Read the review →
  1. BuiltWithOSINT Tools 8.6Free plan
  2. theHarvesterOSINT Tools 7.5Free plan

Strengths and trade-offs

  • BuiltWith — where it wins

    • Profiles website technologies and tracks historical usage.
    • Filters lead lists by technology, location, spend, and company signals.
    • Offers exports, lookup APIs, and broad CRM and data integrations.

    Where it doesn't

    • Its focus is website and company technology, not general-purpose OSINT.
    • Advanced reports and integrations require paid plans.
    • The Free plan is limited to individual website lookups.

  • theHarvester — where it wins

    • Collects intelligence across search, certificate, DNS, code, and threat sources
    • Normalizes findings and lets users review evidence and hostname changes
    • Offers scheduling, a local REST API, and JSONL or SQLite exports

    Where it doesn't

    • Its verified focus is domain and organization intelligence, not social sources
    • Setup and interfaces can vary as the project is rapidly updated
    • Its documentation supports Linux installation; broader OS support is unverified

More comparisons

All OSINT tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update