BuiltWith
Rank #4
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Intelligence
Freemium: Available
Best for: SMBs, Enterprise
BuiltWith is a web analysis tool for identifying website technologies.
Competitive Intelligence
At a glance
4.3
G2 Rating
1004
G2 Review Count
100,000+
User Count
3
Playbooks Count
BuiltWith is a technology profiler and lead-list tool that detects the tech stack of over 370 million websites across 100K+ technologies. Sales and marketing teams use it to build technographic prospect lists and analyze market share.
What is BuiltWith?
Klue is a competitive enablement platform that collects competitor intelligence from millions of web, news, social, and review sources and uses AI to surface the signals that matter, then turns them into sales-ready battlecards. Built sales-first, its core deliverable is the battlecard tightly integrated with Salesforce and seller workflows so reps get the right competitive positioning at the moment of the deal rather than hunting for it. Klue also runs structured win-loss analysis, capturing why deals are won and lost so product marketing and CI teams can sharpen messaging over time.The platform is owned day-to-day by competitive intelligence, product marketing, and sales enablement teams, and distributes intel through Salesforce, email, web, mobile, Microsoft Teams, and Gong. Its newer AI layer "Ask Klue" and the Compete Agent lets reps ask natural-language questions such as "what's their weakness?" or "can they do X?" and get instant, citation-backed answers, even for competitors without a dedicated card. Klue measures revenue impact, battlecard consumption, and competitive win rates, and holds a 4.8/5 G2 rating  the highest in its category across 500+ reviews.
Key Features
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Playbooks using BuiltWith
Technographic Prospecting Playbook
TECHNOGRAPHIC
Competitor Customer Targeting Playbook
COMPETITIVE
Tech-Stack Enrichment Playbook
ENRICHMENT
Market Share Analysis Playbook
MARKET
Displacement Outreach Playbook
OUTBOUND
Pairs well with
These tools are most commonly used alongside Instantly in GTM workflows:
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Campaigns You Can Run
Website Visitor Follow-Up
RB2B identifies visitors, Clay enriches, Instantly sends personalized email within minutes of the visit.
LinkedIn Engagement to Email
Jungler captures ICP engaging with your posts, Clay enriches with email, Instantly sends a warm sequence.
New Funding Round Outreach
Track funding signals via TheirStack, enrich in Clay, and trigger a congratulatory email sequence in Instantly.
Job Change Champion Tracking
User Gems detects when past customers move to new companies. Instantly sends a reconnection sequence.
Competitor Tech Stack Swap
Their Stack identifies companies dropping a competitor tool. Clay enriches contacts. Instantly sends a switch offer.
Campaigns You Can Run
SMBs
Mid-market
Enterprise
Agencies
Top Alternatives
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Teams choose BuiltWith for a few key reasons:
Massive coverage
370M+ sites and 100K+ technologies indexed.
Ready-made lead lists
Export companies by technology in a click.
Market intelligence
Track technology adoption and share over time.
Established data
A long-standing, widely-referenced technographic source.
Frequently Asked Questions
What is BuiltWith?

A technology profiler that detects the tech stack of 370M+ sites across 100,000+ technologies.

Ready-made lead lists

Sales and marketing teams building technographic prospect lists and analysts studying market share.

Is BuiltWith free?

Individual lookups are free; lead lists, reports, and API need Basic ($295), Pro ($495), or Team ($995) monthly plans.

Established data

Updated weekly, with technology history going back about two decades for trend analysis.

Free Cold Email
Get a free deliverability check for your outbound setup. We'll analyze your SPF, DKIM, DMARC, and inbox placement so you know exactly where you stand before sending.
Setup Complexity
Advanced
Full deployment typically requires technical configuration and may involve engineering support.
Pricing
Basic
$295/month
Tech lookups and lead lists for two technologies
Pro
$495/month
More reports, keywords, and historical data
View full pricing page
Common Stack Combination
Data
Clay + FullEnrich
EMAIL
Instantly
Linkedin
HeyReach
signals
RB2B + Jungler
crm
HubSpot or Attio