Retrofit Atlas and BuiltWith
Website technology profiles, trends and lead lists. Not a competitor; the shape the Atlas borrows. Category: model. Audience: Sales, marketers, analysts. Site: builtwith.com.
When to use which
Not a buyer's alternative; read it as the model for free profiles, paid lists.
They have, the Atlas does not
- Domain profiles, trends, lists, API
- Contacts (outside EU/CA)
Not found on their public pages
- retrofit outcome per site (imported, unreviewed for most records)
- provenance chip per fact
- free API/MCP
- dated releases with diffs
Neither BuiltWith nor the Atlas has
- Real estate coverage (BuiltWith) / technology coverage (Atlas)
Public pricing
Coverage, as they state it
| Coverage claim | Source |
|---|---|
| 'Data from 491.9 million domains'; 127,890 technologies; 41 years of history | source |
Sources
- https://builtwith.com/plans · read 2026-10-21
Facts about BuiltWith are theirs, read on the dates shown; they may have changed since. The Atlas claims are about release 2026-10-21. Corrections: desk@retrofitatlas.org.
All comparisons Why retrofit Atlas API and data
Page generated with the site, release 2026-10-21. Corrections: the form or desk@retrofitatlas.org.