Overview

BuiltWith says it tracks 127,671 web technologies across more than 370 million active domains, with over 18 years of technology-usage history. That breadth supports competitor research and analysis of adoption trends as well as prospect discovery. Its public dataset draws on accessible websites and observable internet signals, not password-protected or restricted systems.

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

Key features

Technology research and prospecting

Technographic filters let teams define audiences by the technologies a site uses. Future Customers applies technology overlap to recommend websites as potential sales leads, a useful approach when a particular web stack is the qualification signal. It is less directly suited to prospecting that depends on other kinds of targeting.

Ecommerce and list analysis

Users can find ecommerce sites and products, filter reports by category, region, and technology, and export results. Teams can also analyze uploaded website lists and export report metadata and technology-usage matrices to Excel or CSV. CRM integrations include Salesforce, HubSpot, Pardot, Zoho CRM, Close.io, and Microsoft Dynamics 365.

API and browser access

The API provides XML and JSON feeds, and BuiltWith says AI agents can connect through its APIs, MCP tools, and AI-ready SDKs. Browser extensions are available for Chrome, Firefox, and Edge. These options support workflows beyond the web dashboard, though API credits are capped on the monthly plans that specify a quota.

Pricing

BuiltWith uses a freemium model. Individual website lookups are free forever, while the Free plan allows 10 detailed lookups per day. That is enough for occasional checks, not sustained list research.

Advanced — 144.00 USD per year: Unlimited detailed lookups and a single-login dashboard. Its lower annual price suits an individual who needs regular lookups, but it does not include the technology, retail-report, or API-credit quotas described for higher monthly plans.
Basic — 295.00 USD per month: 2 technologies, 2 keywords, 2 retail reports, 1 system login, 2,000 API credits per month, and 300,000 synced leads or contacts. The defined limits make this the entry point for teams testing a focused monthly workflow; the technology, keyword, and retail-report caps constrain broader research.
Pro — 495.00 USD per month: Unlimited technologies, keywords, and retail reports, 1 system login, 20,000 API credits per month, and 300,000 synced leads or contacts. It removes the research caps but retains a single login, so it suits a high-volume individual workflow more than a multi-user team.
Team — 995.00 USD per month: Unlimited technologies, keywords, and retail reports, unlimited logins, 100,000 API credits per month, and 300,000 synced leads or contacts. This is the plan for shared access and a higher API allowance, at a substantial monthly cost.

Monthly plans have a one-month minimum term; yearly plans have a one-year minimum. Plans can be canceled at any time, but cancellation does not change the stated minimum term. The Free plan remains the practical choice for occasional lookups rather than ongoing exports or API use.

Platforms

BuiltWith is available on the web, through an API, and as a browser extension. Its API and extension options make it relevant to teams that want technology signals in existing workflows, while the dashboard supports research and reporting.

Who it's for

Choose BuiltWith when your sales or research work depends on identifying websites by their technology stack, studying ecommerce adoption, or exporting technology data for analysis. It is a weaker fit for teams needing many shared logins on a lower-cost plan: unlimited logins are reserved for Team, and the cheaper monthly plans allow one.

Pros and cons

Pros: Broad stated coverage and more than 18 years of history support large-scale technology and trend research.
Pros: Ecommerce filters, uploaded-list analysis, and CSV or Excel exports connect discovery with follow-up analysis.
Pros: API feeds, MCP tools, SDKs, browser extensions, and CRM integrations offer several ways to incorporate the data into existing workflows.
Cons: The free plan's 10 daily detailed lookups is restrictive for recurring prospecting.
Cons: Basic limits technologies, keywords, and retail reports to two each, while Pro still allows only one system login.
Cons: Shared access and the largest API allowance require the 995.00 USD per month Team plan.

Alternatives

For broader comparison across adjacent prospecting and enrichment categories, see Lead Enrichment Software, Account Enrichment Software, Company Databases, Sales Prospecting Software, Technographic Data Software, and B2B Contact Data Providers.

Coresignal is worth comparing if you want an API-and-web option with a free tier, a 7-day trial, and a 49.00 USD per month Mini plan.
Datagma is an API, extension, and web alternative with a free plan.
Cleanlist is an API, extension, and web alternative with a free plan and free trial.
Enrichabl is an API-and-web alternative with a free plan.
People Data Labs is an API alternative with a free plan.
Surfe is an API, extension, and web alternative with a free plan.
TargetWise is an API-and-web alternative with a free plan.
Wappalyzer is an alternative with a free plan and a browser and mobile app presence.

Verdict

BuiltWith is a strong fit for teams that need technology-based website discovery, ecommerce research, and exports from a broad web dataset. Its free lookups provide a low-risk way to check individual sites, but the daily cap and steep monthly tiers make it a poor choice for budget-conscious teams needing frequent research or shared access.

	BuiltWith	StackWho
Free plan	Yes	No
Free trial	No	No
Paid from	$12/mo	—
Open source	No	No
Platforms	api, extension, Web	Web
Free plan	Yes	Yes
API access	Yes	—
Paid from	—	79 /mo
Technology detection	—	Yes
Company profiles	—	Yes
Export formats	—	csv

BuiltWith vs StackWho

BuiltWith

StackWho