SimilarTech maps the market. TechSpy reads one company cold.
SimilarTech is a database of who-uses-what across millions of sites. TechSpy points a scanner at a single domain and hands back an opinionated read — what they run, how it's wired, and what it means.
- Deep Scan opens the network tab: hidden APIs, SDKs, and vendors a static crawl never sees
- Full DNS, DMARC, SPF, DKIM, and subdomain audit — infrastructure, not just front-end tags
- A Verdict with Evidence and Implications, each marked High / Medium / Low confidence
Free — no card, 30 scans/day.
TechSpy — the read
HighVerdict
This is a modern SPA team that ships fast and outsources undifferentiated infrastructure — but their email domain is unprotected, a gap that undercuts an otherwise sharp operation.
Evidence: Next.js + Vercel edge stack detected via JS-runtime fingerprints; Segment and a first-party analytics endpoint surfaced only under Deep Scan; DMARC record missing; SPF present but not enforced.
Implications: Front-end maturity says well-funded and engineering-led; the DMARC gap says security review hasn't caught up to growth — a wedge for a security or infra vendor.
Head to head
We're not pretending it's all checkmarks on our side — where SimilarTechgenuinely wins, it's bolded.
What only TechSpy does
The depth SimilarTechdoesn't reach — turned into an action, not a data dump.
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Deep Scan reads the network tab
A headless browser plus HAR capture surfaces the hidden APIs, SDKs, and third-party calls that never appear in static HTML. This is where the vendors nobody advertises show up.
🛡️
Infrastructure, not just front-end tags
Every scan audits DNS, DMARC, SPF, DKIM, and maps subdomains. You see how a company's email and infrastructure are actually configured — and where the holes are.
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A read, not a raw list
Tools get grouped by what they mean, then turned into a Verdict, Evidence, and Implications — each carrying a High / Medium / Low confidence marker. When a site is Cloudflare-blocked, it says so instead of faking a number.
Pick SimilarTech instead if…
Straight up — different jobs. Pick the one that matches yours.
Choose SimilarTech if you need to
- You need historical market-share and adoption trends across a whole technology category over time
- You're building bulk prospecting lists — thousands of companies filtered by the tech they run
- Your workflow is top-of-funnel lead gen, not deep analysis of a specific account
Choose TechSpy if you need to
- You're researching one company at a time and want a read you can act on, not a tag dump
- You need infrastructure signals — DNS, DMARC, subdomains — that a tech database doesn't track
- You're chasing vendors and APIs hidden behind a SPA or only visible after interaction
- You want to start free: 30 scans a day, DNS, sitemap, subdomains, plus save and compare, at $0
Start free — pay when it becomes a habit
Free
$0
- Scans: 30/day
- Deep Scan: —
- Interact: —
- Export · Zapier · API: —
Plus
$19/mo
- Scans: 30/day
- Deep Scan: 10
- Interact: 5
- Export · Zapier · API: —
Max
$49/mo
- Scans: Unlimited
- Deep Scan: 50
- Interact: 25
- Export · Zapier · API: ✓
Enterprise $199/mo. Static scan runs in seconds; Deep Scan & Interact take minutes.
Stop reading — scan one of your real targets
See the opinionated read for yourself. Free, no login, 30 scans a day.