BuiltWith
Operator: BuiltWith Pty Ltd, Australia
Identifies website technologies and shows their usage history, as well as websites using matching technologies or keywords.
Technical Infrastructure
Product
BuiltWith Technology Lookup with paid research reports and API access.
Availability and source date
Active
As of: 16 October 2026.
No functionality test has been performed.
Use in OSINT research
Finds the technologies used by a website and previous changes. Shared technical characteristics help narrow down other websites for subsequent checks.
Queries
| Input | Result | Result type |
|---|---|---|
| Domain / website | Detected current and former website technologies, such as hosting, CMS, analytics and advertising services. | Derived |
| URL | Detected current and former website technologies, such as hosting, CMS, analytics and advertising services. | Derived |
| Keyword / free text | Websites using the specified technology or containing matching words on their homepages. | Retrieved |
Features
- Identifies technologies from publicly accessible website code.
- Shows usage history and changes to detected technologies.
- Finds websites using a particular technology or keyword.
- Shows technical relationships between websites through shared characteristics.
- Exports research reports as CSV or Excel.
- Provides APIs, MCP tools and access for AI agents.
Categories
- Technical Infrastructure
- Internet scanning
- Tracking IDs
Coverage
Geographical coverage
Worldwide
Dataset
Its own index of websites and detected technologies. The provider states that it covers around 491.9 million domains and is updated weekly.
Access
Requirements
Individual website lookups are free. Research reports require an account and a paid plan; API access requires a key.
Export
CSV and Excel for reports; APIs return JSON, XML or CSV depending on the endpoint.
Provider
BuiltWith Pty Ltd
Country of establishment
Australia
Interfaces
API
Available. Documented domain, list, relationship and other APIs. A key, credits and a plan suitable for the endpoint are required.
MCP
Available. Official MCP server on GitHub. Not to be confused with the separately offered search API for the MCP server directory.
AI agents
Available. The provider describes API access, MCP tools and a command line for AI agents.
Usage note
The terms permit internal use and prohibit public redistribution or resale of the data. Automated queries are restricted to authorised APIs.
Legal note
Limitations
- Technology detection relies on code signatures and may identify old or unused components.
- Advanced provides detailed technology profiles, but no research lists or API credits. Its link in the full price list leads to a technology search.
- Shared technology or tracking identifiers indicate a possible connection and do not prove a common operator.
Guides and practical reports
Official · BuiltWith screencast demo
BuiltWith · EN
Shows how to get started with website analysis and research reports.