BuiltWith API
Retrieve website technology stacks including CMS, analytics, hosting, advertising networks, payment processors, JavaScript frameworks, and CDN providers for any domain.
What Is the BuiltWith API?
The BuiltWith API provides programmatic access to BuiltWith's technology profiling database - covering the technology stack of over 673 million websites. For any domain, it returns detected technologies organized into categories: CMS (WordPress, Drupal, Shopify), analytics (Google Analytics, Mixpanel, Heap), advertising networks, JavaScript frameworks, CDN providers, email marketing platforms, SSL certificate providers, hosting infrastructure, and payment processors. Each detected technology entry includes the technology name, category, first detected date, and last detected date.
BuiltWith also provides technology adoption trend data at the market level - tracking how many websites use a given technology, adoption velocity, and market share by category. This makes it the data layer for sales intelligence tools targeting companies by tech stack, competitive research platforms monitoring infrastructure choices, partner ecosystem tools identifying natural integration targets, and market research reports measuring technology category growth. A SaaS vendor can query BuiltWith to build a prospect list of every website running a specific competitor's product; an investor can use it to measure real-world adoption of an infrastructure technology before it appears in public metrics.
Use Cases
What you can build with real-time BuiltWith technology stack data
Tech Stack Lead Generation
Build lists of websites using a specific technology - a CRM, analytics platform, or JavaScript framework - and export them as sales leads. Technology adoption is one of the most reliable signals for targeting companies with relevant SaaS products.
Sales Intelligence
Identify companies using competitor products by querying BuiltWith for technology adoption. Trigger outreach workflows when a prospect adds or removes a technology that signals a buying opportunity for your product.
Technology Market Research
Measure market share and adoption trends for any web technology across millions of websites. Track how quickly platforms like Shopify, WordPress, or analytics tools are gaining or losing installations over time by category and region.
Competitor Tech Analysis
Profile the full technology stack of competitor websites to understand their infrastructure, analytics tooling, advertising partners, and hosting setup. Useful for product benchmarking, pricing research, and partnership strategy.
Partner Ecosystem Mapping
Identify websites that have installed a specific integration or partner technology - payment processors, marketing automation tools, or data platforms. Used by technology vendors to discover natural co-sell and integration partnership targets.
Technology Trend Analysis
Track the rise and fall of technology adoption across industry verticals and company size segments. BuiltWith data powers market intelligence reports and investment research identifying which infrastructure categories are growing fastest.
Available on OpenWeb Ninja
While BuiltWith is not yet available, these complementary web intelligence and contact APIs are live and ready to use today.
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GoogleWant the BuiltWith API on OpenWeb Ninja?
The BuiltWith API is not yet available on our platform. Leave your email and details about your use case - we will prioritize accordingly and notify you when it launches.
API by Category
Search
Business & Location
E-commerce & Products
Contact & Social
Jobs & Finance
Transportation
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