Built for High-Performance Teams

Decode the Architecture of any Website.

WhatStack is the most accurate technology profiler for your browser. Detect frameworks, CMS, analytics, and hosting with a deep scan in one click.

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Empowering 10,000+ developers at companies like

Brilworks Vercel Shopify Tailwind Stripe Brilworks Vercel Shopify Tailwind Stripe

Why Choose WhatStack?

Built by developers for developers, focused on accuracy and privacy.

Signature AI

1000+ Signatures

Detect everything from standard frameworks like React to niche headless CMS and analytics clusters.

Deep Scan

Header Analysis

Go beyond the DOM. We scan HTTP response headers to find server-side tech like Nginx, PHP, and Vercel.

100% Secure

Privacy First

Zero data collection. All detection logic runs locally on your device with no external tracking.

Market Intelligence

Competitive Research

See what your competitors are using and stay ahead of the curve with technology trends.

Who is WhatStack for?

Unlock insights for every role in the digital ecosystem.

Agencies & Freelancers

Audit prospective client websites in seconds. Understand their current infrastructure before you even send a proposal.

  • Tech Audit Reports
  • Competitive Analysis
  • Platform Feasibility

Competitive Intelligence

Track which technologies successful competitors are adopting. Monitor shifts from monolithic to headless architectures.

  • Market Trend Analysis
  • Tooling Discovery
  • Performance Benchmarking

Tech Recruiters

Verify a company's actual tech stack before reaching out to candidates. Ensure your pitch is technically accurate.

  • Stack Verification
  • Accurate Outreach
  • Company Profiling

How the Stack Scan Works

01

Signal Collection

Our engine silently listens for global JavaScript variables, script sources, and meta tags as you browse.

02

Fingerprint Matching

We compare collected signals against our database of 100+ proprietary technology signatures.

03

Instant Analysis

The results are categorized and displayed in a clean, professional dashboard for quick review.

Simple, Transparent Pricing

Free Tier

$0/mo
  • Unlimited Technology Scans
  • 100+ Tech Signatures
  • Basic Categorization
  • Community Support
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Pro Plan

$4.99/mo
  • Everything in Free
  • Full Scan History
  • Export to CSV/JSON
  • Deep Dependency Analysis
  • Priority Support