BuiltWith vs TheirStack
BuiltWith
builtwith.comTheirStack
theirstack.comSide by side
| Figure | BuiltWith | TheirStack |
|---|---|---|
| Price from | $12/mo | $49/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 8 | 4 |
| Spec score · Account Enrichment Software | 8.9 (#1) | 7.8 (#14) |
| Spec score · Technographic Data Software | 8.9 (#4) | 7.8 (#17) |
| Founded | 2007 | 2021 |
| Headquarters | Sydney, New South Wales, Australia | A Coruña, Spain |
| Integrations | BuiltWith lists CRM integrations including Salesforce, HubSpot, Pardot, Zoho CRM, Close.io, and Microsoft Dynamics 365. | TheirStack documents connections with Zapier, Make, N8N, Airtable, and its own webhook endpoints; its contact-finding guide lists Apollo, ContactOut, Instantly, and LinkedIn integrations. |
| Support | Telephone and email support are available seven days a week. | TheirStack asks customers with security questions not answered by its public documents to contact [email protected]. |
Plans
BuiltWith
- FreeFree
- Advanced$144 a year
- Basic$295 a month
- Pro$495 a month
- Team$995 a month
- Basic$295 a month
- Pro$495 a month
- Team$995 a month
TheirStack
- FreeFree
- API$49 a month
- Company credits$109, paid once
- DatasetsPriced on request
In their own words
BuiltWith
BuiltWith profiles websites to help users research technology adoption, ecommerce activity, web usage trends, and potential sales leads. The platform says it tracks 127,671 web technologies and provides usage lists covering more than 370 million active domains, with over 18 years of usage history available through its plans. Users can find ecommerce websites and products, filter reports by category, region, or technology, and export results. Uploaded website lists can be analyzed, with report metadata and technology-use matrices exportable to Excel or CSV. Future Customers uses technology overlap to recommend potential leads. BuiltWith offers API access with XML and JSON feeds, browser extensions for Chrome, Firefox, and Edge, and CRM integrations including Salesforce, HubSpot, Pardot, Zoho CRM, Close.io, and Microsoft Dynamics 365. Individual website lookups are free; the Free plan permits 10 detailed lookups per day. Advanced costs $144 a year. Monthly plans have a one-month minimum and yearly plans a one-year minimum, and plans can be canceled at any time. The maker was founded in 2007 and is based in Sydney, Australia.
TheirStack
TheirStack helps sales and marketing teams find companies that may need what they sell, using job postings as clues to company needs. Users can search companies by technology use across a catalog of more than 33,000 technologies, or filter job postings for keywords tied to their software’s use cases. The job-postings API covers 250 million jobs across 195 countries since 2021 and searches 362,000 other websites alongside named job boards.
The web app includes job and company search, company lookup, list enrichment, CSV or Excel exports, and daily or weekly email alerts. API plans add job search, company search, technographics and buying-intent endpoints, webhooks, and an MCP server for AI assistants. Integrations include Zapier, Make, N8N, Airtable, and contact-finding services such as Apollo, ContactOut, Instantly, and LinkedIn. TheirStack does not provide personal contact data directly, but connects to third-party providers and shows hiring-manager information for applicable jobs. Company exports are capped at 200 jobs per company; full job history is available through the Job Search API, webhooks, or MCP server. Free is available; API starts at $49 a month.