Lead Enrichment
Complete partial records with verified emails, job titles, and firmographic company data.
Data Enrichment · Free forever
Free Website Tech Stack Checker
Find Leads by What Tools They Use
Enter URL to detect CMS, analytics, chat, hosting and 50+ technologies for technographic segmentation.
Run the tool
This tool performs a live lookup (DNS, WHOIS, or a page fetch) that a browser cannot do on its own, so the value you enter is sent to our server for that check. It is not stored. If the lookup is unavailable, the tool falls back to its offline formula and tells you.
Under the hood
How this tool works
No black box. This is the exact logic the tool runs on every input you give it.
Formula
Stack = Σ Fingerprint matches (HTML markers, script hosts, headers, cookies)
- 1
Normalise the domain: drop the protocol, the path, and any www prefix.
- 2
Derive what the domain string itself reveals — TLD class, brand length, and structure.
- 3
Lay out exactly which records to read and what a healthy value looks like.
- 4
Return the read-out plus the follow-up action for anything that looks wrong.
Need this at scale?
Two Govarova products that do this automatically
The free tool handles one input at a time. These handle millions — verified, enriched, and ready to send.
Lead Finder
Turn a first name, last name, and company into a verified, deliverable email address.
More free data enrichment tools
Register & start — free
Run Free Tech Stack Detector as often as you like. When you are ready to do it across your whole market, Govarova is waiting.