BuiltWith
👤 Gary Brewer (Sydney dev; built it nights/weekends about 4 yrs, stayed essentially solo, refused to hire until $100k/mo. Co-founder Rogers advises.)🌐 siteLinkedIn
A solo Australian dev turned a weekend curiosity — "what is this site built with?" — into a web-scale data monopoly.
Will it work? · our read
A compounding flywheel. Be honest — tech detection isn't defensible; the head start and free-SEO distribution are. This win is timing (since 2007) plus relentless solo discipline, not one clever trick.
01How the money moves
Crawl about 492M domains, log each site's full tech stack
→
Publish free public profile pages → rank in Google → free inbound
→
Sell bulk lead lists + trend data to sales teams, $295-995/mo
02The numbers
491.9M
domains indexed
STATED
18+ yrs
un-backfillable tech history
STATED
$14M/yr
revenue (est.)
EST
Crawl-scale and pricing figures are first-party; the revenue tile is a flagged third-party estimate. BuiltWith.com (crawl scale, first-party)
Widely repeated at about $14M/yr (origin: a Nathan Barry tweet, echoed by dozens of blogs). Latka estimates $22.6M for 2024. The only first-party figure ever disclosed was about $40k/month circa 2011, via co-founder Andrew Rogers. Treat current revenue as an estimate.
03Weight class — CENTStap an axis
Control High
Owns its crawl infra, brand and dataset — no platform can switch it off; 'BuiltWith' is near-generic for tech lookup.
04The key move
Sell the reverse
Instead of gating the answer, Brewer made every tech profile a free public page that ranks in Google for free inbound. He sells the reverse: 'who uses Shopify' lists to sales teams at $295-995/mo.
fact
The counter-intuitive move
The discipline: he refused to hire until revenue hit about $100k/month, staying essentially solo. Costs near zero, margins near total — so he can out-wait any funded rival on price.
our read
05Where the moat is
Why a copycat starting today loses:
18+ yrs of crawl history — un-backfillableMillions of free pages own the SEO for tech queriesCategory-defining brand: the default web-tech sourceNear-zero solo cost — undercuts any funded rival
06How it diesmedium confidence
A clone dies because the lookup is a free commodity — Wappalyzer is open-source, extensions too. Without the historical archive and free-SEO pages, a newcomer must buy traffic to sell what's free elsewhere. our read
Show evidence · counter
Evidence: Wappalyzer (open-source) and numerous free extensions replicate the core detection; BuiltWith's paid value sits in bulk and historical data plus lead lists, not the lookup. "It's free elsewhere" is a recurring theme in reviews and alternative round-ups.
Counter: It survives because the moat was never the detection — it's the 18-year archive (un-backfillable), the free public-page SEO flywheel, and B2B default-source trust. The solo cost structure means it can win any price war a challenger tries to start.
07Against rivals
Detection is a crowded commodity; BuiltWith leads on history and free-SEO distribution, not on features. our read
08Who uses it
Sales & BD teams building targeted prospect lists ('everyone on Shopify')Competitive-intelligence and market-research analystsAgencies and marketers sizing technology marketsInvestors and VCs tracking product-adoption trendsJournalists and researchers citing web-tech share
★Would it work for you?
You're a solo builder — could you turn your product's own output into free, Google-ranking pages that become your entire top-of-funnel, the way BuiltWith did?
BuiltWith's edge is an 18-year archive no latecomer can back-fill, marketed free by its pages. We don't score you — you answer.
🚀Use it as a launchpada prompt for your own AI
Copy → paste into your AI → then develop it freely in the conversation.
You are a sharp, honest startup strategist. Use the proven case below as a launchpad for MY idea — help me find my own angle, not copy it.
<my_profile>
Domain I know: [your domain]
My unfair advantage (access/audience): [your edge]
Interests: [your interests]
Resources & goal: [your resources] · [your goal]
</my_profile>
<case name="BuiltWith" model="data">
What it does: Crawls about 492M domains to detect each site's tech stack, then sells sales teams the reverse: bulk lists of who uses a given tool, plus 18 years of adoption trends.
Why it won (moat): 18-yr un-backfillable crawl history + millions of free SEO profile pages + B2B default-source trust — not the (commoditized) detection itself.
Weakest axis (CENTS): Core lookup is free elsewhere (Wappalyzer); paid revenue rides discretionary lead-gen budgets.
How it could die: A clone with no history and no free-SEO footprint must buy traffic to sell what users can get free — it bleeds out.
</case>
<task>
Be a skeptical operator, not a cheerleader. No generic startup platitudes. If my angle is weak, say so plainly.
First, a reality check: markets like this mostly fail. State the honest base rate (how crowded/hard is this?) and the ONE specific thing that would have to be true for ME to be the exception — grounded in my profile above.
Then a compact table:
- Fit — does this pattern suit my edge, or fight my gap?
- Angle — my sharpest differentiation vs BuiltWith (concrete, not "better UX")
- Distribution — exactly where my first 100 users come from (this is the hardest part — be specific, not "content marketing")
- Risk — its "how it dies" (above) in MY situation
Finish with one line: "The single thing to do next."
Use only the facts above; if data is thin, say so — never invent numbers.
Then stay with me and go deeper on whatever I ask — tech stack, rough cost & time, the smallest MVP to test, pricing, or timing.
</task>
✓ Copied — paste into your AI
👤Placeholders like [your domain] auto-fill from your profile — example values for now.Set up profile →
Sourcesupdated · daily
Andrew Rogers, co-founder — The Story of BuiltWith (first-party; $40k/mo figure, hiring hurdle, organic-traffic model)BuiltWith — Plans & Pricing (first-party: $295 / $495 / $995 per month)BuiltWith.com — crawl scale, first-party (491.9M domains, 18+ yrs, 122K technologies)Nathan Barry tweet — origin of the $14M/yr figure (third-party)Latka — $22.6M revenue estimate, 2024 (third-party, treat with caution)
Revenue is NOT first-party: the famous $14M/yr traces to a Nathan Barry tweet echoed by blogs, and Latka estimates $22.6M (2024) — both flagged estimates. The only first-party revenue ever stated was about $40k/mo (circa 2011) by co-founder Andrew Rogers. Headcount claims range from 1 to about 9; treated as "essentially solo." Pricing, crawl-scale and technology-count figures ARE first-party from builtwith.com. Revenue flagged EST; not independently confirmed. We never score you.