MurmStack vs BuiltWith
One is a free extension that measures the page in front of you. The other is a data business selling technology lookups, histories and lead lists.
Stated plainly: we make MurmStack. BuiltWith is a serious product with a large historical dataset MurmStack has no equivalent of. These two tools barely overlap.
Short answer
Use BuiltWith when you need data about many sites — who uses what, since when, exported. Use MurmStack when you need to know what one page just did — how many companies it contacted, and how early.
Side by side
| Capability | MurmStack | BuiltWith |
|---|---|---|
| Where the data comes from | The live page, in your browser | BuiltWith’s own crawl and archive |
| Single-site lookup | Free | Free on their site, no signup |
| Historical records | No | Yes — a core strength |
| Bulk lists and CSV export | No | Yes, on paid plans |
| Counts distinct companies contacted | Yes | No |
| Timing / pre-consent reporting | Yes, to the millisecond | No |
| Paid plans | None | ~$295–$995/mo |
Where BuiltWith is genuinely better
- History. BuiltWith can tell you what a site used two years ago. MurmStack only sees the page you are on, now.
- Scale. “Every store running this app” is a BuiltWith query. MurmStack has no backend and cannot answer it.
- Sales research. Technology-based lead lists are BuiltWith’s business.
Where MurmStack does something else
A crawl-based inventory cannot tell you when something loaded, because it is not watching a real load in a real browser. MurmStack is, so it reports:
- Distinct companies contacted, merged to the parent — Google’s several domains count once.
- How many were contacted before a consent tool could be answered, with the exact millisecond of first contact.
- Which of those companies are in the business of tracking people.
- The stack, with the global or asset that proved each line.
Which should you use
Use BuiltWith
You need technology data across many sites, historical records, or exportable lists — and you have the budget.
Use MurmStack
You are auditing a page and need to know who it contacted, when, and what proved each detection. Free, no account.
Questions
Is there a free alternative to BuiltWith?
For one site at a time, yes — BuiltWith’s own single-domain lookup is free, and free extensions including MurmStack and Wappalyzer read a page directly. Bulk data, history and CSV export are what the paid plans sell.
How much does BuiltWith cost?
Published plans checked in July 2026 run from about $295/month to roughly $995/month, with free single-domain lookups on their site. Check builtwith.com for current pricing.
Can BuiltWith tell me which trackers fire before consent?
No — it reports which technologies a site uses, from its own crawl, not the timing of a live load.
Does MurmStack have historical data?
No. It measures the page in front of you at the moment you click, and keeps no archive.