Overview

BuiltWith says its coverage spans 127,671 web technologies and more than 370 million active domains, with over 18 years of usage history. That scope can help teams examine adoption patterns and competitors at scale, though the public dataset reflects accessible websites and observable internet signals rather than restricted systems.

The maker states that BuiltWith is PCI DSS monitored by SecurityMetrics, and that its data centers are ISO/IEC 27001, SOC 1 Type II, and SOC 2 Type II certified. Servers processing personal data are HSTS enabled. Telephone and email support are available seven days a week.

Key features

Technology-led research and prospecting

Technographic filters let users narrow websites by technology adoption. Future Customers uses technology overlap to recommend potential sales leads, which is a focused way to build a prospect pool when a company's web stack matters to qualification. It is less suited to teams whose targeting depends on signals beyond technology use.

Ecommerce research and exports

Users can find ecommerce websites and products, filter reports by category, region, and technology, then export results. Uploaded website lists can also be analyzed, with report metadata and technology-usage matrices exportable to Excel or CSV. These capabilities make BuiltWith more useful for structured research than a simple technology lookup, but the available plan limits matter: Basic allows two retail reports, while Pro and Team allow unlimited retail reports.

Integrations and developer access

BuiltWith lists CRM integrations including Salesforce, HubSpot, Pardot, Zoho CRM, Close.io, and Microsoft Dynamics 365. Its API provides XML and JSON feeds, and its APIs, MCP tools, and AI-ready SDKs support connections with AI agents. API access is more practical on higher plans for teams making frequent requests, since monthly credits range from 2,000 on Basic to 100,000 on Team.

Browser extensions are offered for Chrome, Firefox, and Edge, alongside web and API access. This gives users several ways to work with the service, although the plan comparison is the more important choice for sustained lookup or export workloads.

Pricing

BuiltWith uses a freemium model. Individual website lookups remain free, but the Free plan is capped at 10 detailed lookups per day. That suits occasional checks, not ongoing research or prospecting at scale.

Free: 0.00 USD per free, with 10 detailed lookups per day. A no-cost way to check individual sites, with a firm daily limit.
Advanced: 144.00 USD per year, billed for a minimum of one year. It includes unlimited detailed lookups and a single-login dashboard, making it the least expensive paid option for an individual focused on lookups. It does not include the broader published report and API quotas of the monthly plans.
Basic: 295.00 USD per month, with a one-month minimum. It includes two technologies, two keywords, two retail reports, one system login, 2,000 API credits per month, and 300,000 synced leads or contacts. The constrained research allowances make it a narrow fit for users who can work within those caps.
Pro: 495.00 USD per month, with a one-month minimum. It raises technologies, keywords, and retail reports to unlimited, while retaining one system login; API credits rise to 20,000 per month and synced leads or contacts remain capped at 300,000. It fits a single-login user needing broader research and more API capacity.
Team: 995.00 USD per month, with a one-month minimum. It keeps the unlimited research allowances, adds unlimited logins, and provides 100,000 API credits per month, with 300,000 synced leads or contacts. This is the plan for teams that need multiple logins and substantially more API capacity.

Monthly plans have a minimum one-month term and yearly plans a one-year term; plans can be canceled at any time. That cancellation flexibility does not remove the minimum commitment, especially relevant for Advanced's annual billing.

Platforms

BuiltWith is available on the web, through an API, and as browser extensions for Chrome, Firefox, and Edge. API feeds support XML and JSON.

Who it's for

BuiltWith is a strong fit for sales teams building audiences around a technology footprint, and for researchers comparing adoption or ecommerce activity across sites. It is also relevant to developers and data teams that need technology-use data through API feeds or exports. Occasional users can stay with free individual lookups; teams needing broad research, higher API quotas, or multiple logins should budget for Pro or Team. It is a weaker choice for buyers who need broad prospect targeting unrelated to web technologies or who cannot justify the paid plan commitments.

Pros and cons

Pros: Broad stated coverage and more than 18 years of history support both current profiling and trend analysis.
Pros: Ecommerce filters, list analysis, and spreadsheet exports connect research to usable reports.
Pros: CRM integrations and technology-overlap lead recommendations support prospecting workflows.
Cons: Free detailed lookups stop at 10 per day, limiting repeated research.
Cons: Basic and Pro each allow only one system login, so teams needing shared access must move to Team at 995.00 USD per month.
Cons: Advanced requires a one-year minimum, while the richer monthly plans begin at 295.00 USD per month.

Alternatives

For prospect enrichment centered on flexible data workflows, Clay is an alternative: its free plan includes 500 actions per month, 100 data credits per month, unlimited seats and tables, and up to 200 rows per table. Choose it when those enrichment allowances and flexible seats matter more than BuiltWith's technology-usage coverage.

Wappalyzer is another freemium option, with 50 technology lookups and 50 email verifications per month, five website alerts, and free sample lead lists. Its smaller free lookup quota may fit a user seeking a lightweight technology-checking and alerting option.

Coresignal offers a free tier with 2,000 credits, 5 requests per second, a seven-day trial, and email support. Consider it when a credit-based API starting tier is the relevant comparison.

Other options include Elvesora Enrichment, Enigma, PredictLeads, The Official Board, and TheirStack.

Readers comparing categories can also browse Account Enrichment Software, Technographic Data Software, Lead Enrichment Software, Company Databases, Sales Prospecting Software, and B2B Contact Data Providers.

Verdict

Choose BuiltWith if technology adoption is central to your prospecting or competitive research: its broad web coverage, ecommerce reports, and developer access make it more than a site lookup tool. Look elsewhere if your targeting relies on other kinds of data or if the paid plan costs and minimum terms outweigh the value of web-stack intelligence.

	BuiltWith	Mattermark
Free plan	Yes	Yes
Free trial	No	Yes
Paid from	$12/mo	$49/mo
Open source	No	No
Platforms	api, extension, Web	api, extension, iOS, Web, Windows
Free plan	Yes	No
API access	Yes	Yes
Paid from	—	49 /user/mo

BuiltWith vs Mattermark

BuiltWith

Mattermark