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Head-to-head · OSINT Tools

BuiltWith vs ViewDNS.info

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score BuiltWith #3 in OSINT Tools 8.6/10 Free plan Free plan✓ 1 of 6 features Visit BuiltWith
ViewDNS.info #5 in OSINT Tools 7.8/10 Free plan Free plan✓ 0 of 6 features Visit ViewDNS.info

BuiltWith leads on 0 checks, ViewDNS.info 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 scoreBuiltWith · 8.6/10
  • Free planboth
  • Most featuresBuiltWith · 1 of 6

BuiltWith scores higher on our rubric for osint tools: 8.6 against 7.8 out of 10; our editors rank them #3 and #5.

BuiltWith is the better fit for technology-focused web reconnaissance. ViewDNS.info is the better fit for affordable domain and IP lookups.

  • BuiltWith fits best

    Technology-focused web reconnaissance

  • ViewDNS.info fits best

    Affordable domain and IP lookups

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 ↗ ViewDNS.info 7.8/10 Visit ↗
At a glance
Editor score 8.6 7.8
Ranking #3 in OSINT Tools #5 in OSINT Tools
Best for Technology-focused web reconnaissance Affordable domain and IP lookups
Pricing model Free plan + paid Free plan + paid
Starting price $144/yr —
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Browser extension Cloud, Browser extension
Platforms Web, Chrome extension Web
Support Email, Phone Email, Docs
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features BuiltWith 1/6 · ViewDNS.info 0/6
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 ✓ (best) Not checked yet
Data export Not checked yet Not checked yet
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.
  • Covers WHOIS, RDAP, DNS, reverse lookups and historical IP checks
  • Sandbox offers 250 trial queries and access to most APIs
  • CSV, JSON and XML outputs support manual and programmatic workflows
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.
  • Entry paid tier is limited to 1,000 monthly queries
  • Sandbox access covers most, not all, APIs
  • Focused on lookups rather than a broad investigation workflow
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 →

ViewDNS.info brings browser-based domain and IP checks together with an API for programmatic queries. Its tools include WHOIS for domains and IP addresses, registry-selected WHOIS or RDAP sources, reverse WHOIS by registrant name or email,…

Read the review →
  1. BuiltWithOSINT Tools 8.6Free plan
  2. ViewDNS.infoOSINT Tools 7.8Free 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.

  • ViewDNS.info — where it wins

    • Covers WHOIS, RDAP, DNS, reverse lookups and historical IP checks
    • Sandbox offers 250 trial queries and access to most APIs
    • CSV, JSON and XML outputs support manual and programmatic workflows

    Where it doesn't

    • Entry paid tier is limited to 1,000 monthly queries
    • Sandbox access covers most, not all, APIs
    • Focused on lookups rather than a broad investigation workflow

More comparisons

All OSINT tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update