Wappalyzer tells you what.
TechSpy tells you what it means.
Type a domain. Get the company's real tech stack, plus the strategy you can read off their public infrastructure.
Most scanners hand you a list of tools and stop. TechSpy reads that list the way an operator would: what it says about how the company sells, ships, and grows. It also sees through React and Next.js single-page apps that leave other scanners guessing.
One scan, decoded
Here's the difference, on three signals from a single scan. The raw detection is on the left. The strategic read a skeptic can verify is on the right. Re-run any of these yourself.
js.stripe.com in the pageSubscription billing. They monetize recurring, not one-time.
Sitemap: 40 blog posts, 0 comparison pagesContent-first GTM, thin at the bottom of the funnel. A gap you can attack.
3 frontends on 3 subdomainsSeparate teams own marketing, app, and docs. Read the org chart off the DNS.
What the scan actually sees
No vanity stats. Here's the real surface, in three layers of depth.
Surface
SecondsEvery scanWhat the site shows the world.
Deep Scan
MinutesPlus and upThe tools that never show up in page source.
Interact
MinutesPlus and upWhat loads after someone acts.
Every scan rolls up into 5 strategy dimensions, so you get a read, not a raw dump.
Honest by design
Public signals only.
No logins, no privileged access, no scraping behind a paywall. Everything TechSpy reads, anyone could reach.
We say when a scan is blocked.
If Cloudflare stops us or a sitemap is missing, we flag it and mark confidence Low or Medium. We don't fill the gap with a guess.
No invented answers.
Missing data stays missing. You always know what's measured and what isn't.
Who it's for
Sales
Run pre-call recon. Walk in knowing their stack and how they buy.
See the workflow →Product
Tear down a competitor's build and roadmap signals in minutes.
See the workflow →Content
Find the GTM gaps their sitemap admits to, then fill them.
See the workflow →Agencies
Audit a client's stack fast, back the pitch with evidence.
See the workflow →Built by
Daniel Liu
Daniel is a marketing strategist who taught himself to build. He made TechSpy because a company's tech stack gives up more real strategy than any pitch deck ever will, and no tool was reading it that way.
hi-daniel.com →Test the claim on your own competitor
Pick a domain you already know well. Scan it. See if the read holds up.
Free needs no card — 30 scans a day, DNS, sitemap, subdomains, save & compare. See full pricing