BuiltWith gives you the data. TechSpy gives you the decision.
Punch in a domain. Get a competitor's real stack turned into a read you can act on — Verdict, Evidence, Implications — in seconds. No $295/mo minimum, no lead-list bloat.
- An opinionated read, not a flat list of detected tags
- DMARC/SPF gaps, new subdomains and hidden APIs — as a next move
- Reads through React & Next.js SPAs, then starts free at 30 scans/day
Free — no card, 30 scans/day.
BuiltWith — raw data
TechSpy — the read
HighVerdict
HubSpot + Segment, no DMARC record → lead with a deliverability & security angle.
Evidence: HubSpot forms, Segment analytics.js, SPF present, DMARC missing.
Implications: deliverability exposure they haven't closed — a concrete opener.
A tag list isn't an answer. It's homework.
Same company, two outputs. BuiltWith hands you a long flat list of detected tags and you still have to figure out what it means. TechSpy does that step for you.
Raw data
TechSpy read
High- VerdictWhat their stack tells you, in plain English
- EvidenceThe specific tools and signals behind it
- ImplicationsWhat it means for your GTM, your pitch, your next move
Tools grouped by meaning, not dumped alphabetically. High / Medium / Low confidence on every call — no fake certainty.
Head to head
We're not pretending the whole table is checkmarks on our side. The bottom two rows are BuiltWith's home turf — and if that's your job, that's your tool.
It reads the sites that break other scanners
Modern sites ship a near-empty HTML shell and render everything in JavaScript. A simple scraper looks at that shell and sees almost nothing. TechSpy fingerprints three layers at once.
Empty HTML shell
📄
React / Next.jsThree-layer fingerprint
- · Static HTML — the classic markers
- · JS-runtime — what actually boots in the browser
- · HTTP headers — the server's own tells
Detected stack
✓
Named, even where scrapers come back empty.
Blocked by Cloudflare or a hard bot wall? We tell you. Integrity over a fake 100%.
Signals BuiltWith won't hand you as a next move
These are the things you check when you're trying to understand and act, not build a list.
📧
Email-security audit
DMARC / SPF / DKIM posture at a glance. Spot the gaps a prospect or competitor hasn't closed.
🌐
Subdomain discovery
Catch infra and product expansion before the press release. New staging, region, or product surface shows up here first.
🔍
Deep Scan + Interact
Headless render + HAR surfaces hidden APIs and SDKs. Interact drives the page to reveal tools that only appear after you engage.
Worked example: a prospect running HubSpot + Segment with no DMARC recordhands you a deliverability-and-security pitch on a plate — a specific opener BuiltWith's tag list never surfaces.
Static scan is the “seconds” one. Deep Scan and Interact take minutes — they're doing real browser work, not a header peek.
The analysis lives in your workflow, not a CSV you still have to decode
A BuiltWith export is a spreadsheet you still have to interpret. A TechSpy report is already the interpretation.
Saved scans · compare · history
Ready to hand a client
Pipe it into your stack
Pick BuiltWith instead if…
Straight up — BuiltWith is the better tool when your job is scale. Different jobs; pick the one that matches yours.
Choose BuiltWith if you need to
- Build large sales-lead lists — thousands of domains filtered by technology
- Pull deep historical tech-change data going back years
- Run firmographic or market-share research across whole markets
Choose TechSpy if you need to
- Understand a handful of specific competitors and decide
- Get a fresh, opinionated read — not a raw tag dump
- See DMARC/SPF gaps, new subdomains, and hidden APIs as an action
- Start free and stay well under $50/mo
Every plan is under BuiltWith's starting price
Max $49 < BuiltWith Pro ~$295. That's the pitch on price alone.
Free
$0
- Scans: 30/day
- Deep Scan: —
- Interact: —
- Export PDF · Zapier · API: —
Plus
$19/mo
- Scans: 30/day
- Deep Scan: 10
- Interact: 5
- Export PDF · Zapier · API: —
Max
$49/mo
- Scans: Unlimited
- Deep Scan: 50
- Interact: 25
- Export PDF · Zapier · API: ✓
Enterprise $199/mo. For reference, BuiltWith Pro starts around $295/mo — more than our top tier.
Scan your first competitor free