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Head-to-head · OSINT Tools

OWASP Amass vs BuiltWith

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score OWASP Amass #2 in OSINT Tools 8.8/10 Free plan Free plan✓ 1 of 6 features Visit OWASP Amass
BuiltWith #3 in OSINT Tools 8.6/10 Free plan Free plan✓ 1 of 6 features Visit BuiltWith

OWASP Amass leads on 0 checks, BuiltWith on 0, and 2 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreOWASP Amass · 8.8/10
  • Free planboth

OWASP Amass scores higher on our rubric for osint tools: 8.8 against 8.6 out of 10; our editors rank them #2 and #3.

OWASP Amass is the better fit for free, self-hosted external asset reconnaissance. BuiltWith is the better fit for technology-focused web reconnaissance.

  • OWASP Amass fits best

    Free, self-hosted external asset reconnaissance

  • BuiltWith fits best

    Technology-focused web 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 OWASP Amass 8.8/10 Visit ↗ BuiltWith 8.6/10 Visit ↗
At a glance
Editor score 8.8 8.6
Ranking #2 in OSINT Tools #3 in OSINT Tools
Best for Free, self-hosted external asset reconnaissance Technology-focused web reconnaissance
Pricing model Free Free plan + paid
Starting price Free plan $144/yr
Free plan ✓ ✓
Free trial — —
Deployment Self-hosted Cloud, Browser extension
Platforms Windows, macOS, Linux Web, Chrome extension
Support Email, Community, Docs Email, Phone
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features OWASP Amass 1/6 · BuiltWith 1/6
Social source search Not checked yet Not checked yet
Domain & IP lookup Not checked yet Not checked yet
Monitoring & alerts Not checked yet Not checked yet
Link analysis Not checked yet Not checked yet
API access ✓ ✓
Data export Not checked yet Not checked yet
Our review
Pros
  • External asset discovery with active reconnaissance and attack-surface mapping
  • Open Asset Model and asset database organize findings and relationships
  • Cross-platform deployment with Docker, Docker Compose, and a REST API
  • 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.
Cons
  • Command-line workflow may require technical security expertise
  • Self-hosted deployment leaves operations to your team
  • Focuses on external assets rather than broader investigations
  • 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.
Our verdict

OWASP Amass is an open-source framework for security teams, penetration testers, and organizations assessing internet-facing infrastructure. It combines open-source intelligence collection, active reconnaissance, external asset discovery,…

Read the review →

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 →
  1. OWASP AmassOSINT Tools 8.8Free plan
  2. BuiltWithOSINT Tools 8.6Free plan

Strengths and trade-offs

  • OWASP Amass — where it wins

    • External asset discovery with active reconnaissance and attack-surface mapping
    • Open Asset Model and asset database organize findings and relationships
    • Cross-platform deployment with Docker, Docker Compose, and a REST API

    Where it doesn't

    • Command-line workflow may require technical security expertise
    • Self-hosted deployment leaves operations to your team
    • Focuses on external assets rather than broader investigations

  • 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.

More comparisons

All OSINT tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update