Tech Stack Checker

Enter any URL to instantly detect its CMS, frameworks, analytics, hosting, and 1,200+ technologies. Understand what competitors are built with.

No signup required · 100% free · Instant results

Website Tech Stack Analyzer

Enter any URL to detect technologies powering it

Try:

How to Check What Technology a Website Uses

Step 1

Enter URL

Type the website URL you want to analyze. Works with any public website — from startups to enterprise platforms.

Step 2

Real-Time Scan

Our tool scans the site's code, headers, scripts, and meta tags in real-time to detect technologies across 20+ categories.

Step 3

Get Results

Receive an instant detailed breakdown of all detected technologies with versions, categories, and confidence scores.

What Technologies Does Our Checker Detect?

CMS & Frontend Framework Detection

Identify React, Next.js, Vue, Angular, WordPress, Shopify, Webflow, and 200+ frameworks. Know exactly what powers any website's frontend and content layer.

Analytics & Tracking Scripts

Discover Google Analytics 4, Meta Pixel, PostHog, HubSpot, Hotjar, and every tracking script a site loads. See how competitors measure and optimize user behavior.

Hosting, CDN & Cloud Infrastructure

Reveal whether a site runs on Vercel, AWS, Cloudflare, Netlify, or Fastly. Understand server architecture, CDN strategy, and deployment platform choices.

E-commerce & Payment Detection

Detect Shopify, WooCommerce, BigCommerce, Stripe, and PayPal integrations. Map how online stores handle products, checkout, and payment processing.

Security & Performance Tools

Find SSL certificates, reCAPTCHA, Cloudflare Turnstile, and security headers. Essential for B2B sales intelligence and vendor evaluation.

Dev Tools & Error Monitoring

Uncover Sentry, Datadog, LogRocket, LaunchDarkly, and A/B testing platforms. See how engineering teams monitor, debug, and experiment in production.

Who Uses a Website Technology Checker?

Competitive Technology Analysis

Marketers and growth teams reverse-engineer competitor tech stacks to benchmark their own tooling. Combine this with our company research tool for a complete competitive picture including revenue, headcount, and funding data.

M&A Tech Due Diligence

Investors and acquirers audit a target company's tech stack before signing. Quickly assess technical debt, infrastructure maturity, and engineering sophistication without access to source code.

B2B Sales Prospecting

Sales reps identify prospects running specific technologies to craft hyper-relevant pitches. Know a lead uses HubSpot or Shopify before your first cold email outreach to dramatically boost reply rates.

Architecture & Stack Planning

CTOs and developers analyze what technologies industry leaders and peers are adopting. Make data-driven architecture decisions instead of guessing which frameworks and infrastructure to invest in.

Free BuiltWith & Wappalyzer Alternative — No Signup

vs BuiltWith

100% free with no query limits, instant results without signup, cleaner interface with faster scanning. BuiltWith requires paid plans for full access.

vs Wappalyzer

More accurate detection, broader technology coverage, no browser extension needed, works seamlessly on mobile devices without installation.

vs SimilarTech

No paywalls, complete data visible immediately, regularly updated detection database with weekly additions of new technologies.

Our Advantages

Unlimited free searches, no registration required, privacy-focused analysis, real-time detection, and comprehensive technology coverage. Combine with company location finder for complete company intelligence.

What Users Say About Our Tech Stack Checker

★★★★★

“This tool saved me hours of manual research. I used to check competitor websites one by one, but now I can instantly see their entire tech stack. The detection accuracy is impressive.”

Sarah M.

Marketing Director

★★★★★

“As a developer, I love seeing what frameworks and tools other companies use. It helps me stay current with industry trends and make better technology decisions for my own projects.”

James L.

Full-Stack Developer

★★★★★

“I use this for sales intelligence all the time. Knowing a prospect's tech stack lets me personalize my pitch and offer relevant solutions. It's become an essential part of my workflow.”

Emily R.

Sales Engineer

★★★★★

“Before choosing our tech stack, I analyzed dozens of competitor sites with this tool. It gave me confidence in our technology choices and helped us avoid costly mistakes.”

David K.

Startup Founder

★★★★★

“Our team uses this for competitive intelligence and due diligence. The breadth of technologies detected is remarkable — from hosting providers to tiny analytics scripts.”

Lisa T.

Product Manager

★★★★★

“We run this on every prospect's website before a pitch meeting. Understanding their current tech stack helps us identify gaps and propose targeted solutions they actually need.”

Michael P.

Agency Owner

Instagram Fake-Follower-Check

Erkennen Sie gefälschte Instagram-Follower sofort. Unser kostenloses Tool analysiert Engagement-Rate, Follower-Qualität und Glaubwürdigkeitswert, um Bot-Konten zu identifizieren. Keine Anmeldung erforderlich.

Tech Stack Checker

How to Check What Technology a Website Uses

What Technologies Does Our Checker Detect?

Who Uses a Website Technology Checker?

Free BuiltWith & Wappalyzer Alternative — No Signup

What Users Say About Our Tech Stack Checker

Entdecke unser komplettes Toolkit

FAQ

What is a tech stack?

How accurate is this website technology checker?

Is this tech stack checker really free?

How do you find out what CMS a website uses?

What technologies can this tool detect?

Go Beyond Tech Stack Analysis