What Is a Tech Stack? How to Find Any Website's Tech Stack (2026)

Q: What is a tech stack?

A tech stack (technology stack) is the complete set of software, frameworks, languages, databases, and services that a website or application is built with. For a website, this typically includes the CMS or framework, front-end libraries, back-end language, database, hosting provider, CDN, and analytics tools.

Q: How do I find the tech stack of a website?

The easiest way is to use Web Reveal at webreveal.io—a free technology scanner that automatically detects and displays the full tech stack of any URL in seconds. You can also manually inspect the page source, HTTP headers, and network requests for technology signals.

Q: Why would I want to know a website's tech stack?

Common reasons include: competitive research (understanding what technologies rivals use), development research (finding out how a site achieves specific features), sales prospecting (targeting companies using specific platforms), security assessment, and due diligence when acquiring a website or business.

Q: Can every part of a website's tech stack be detected?

Not always. Server-side technologies like the database engine, back-end programming language, and internal infrastructure are usually not directly visible to external scanners. Tools like Web Reveal focus on front-end, middleware, and infrastructure signals that are observable from the outside.

What Is a Tech Stack?

A tech stack (short for technology stack) is the combination of programming languages, frameworks, databases, tools, and services used to build and run a website or application. Think of it as the recipe of ingredients that make a digital product work.

The term comes from software development, where "stack" refers to the ordered layers of software from the front end (what users see) down to the infrastructure (servers and databases that make it work). Every website has a tech stack, whether it's a simple static HTML site or a complex enterprise SaaS application.

Example: A typical e-commerce site might use Shopify (commerce platform), React (front-end JavaScript framework), Cloudflare (CDN), and Google Analytics (analytics). That combination is its tech stack.

The Layers of a Website's Tech Stack

For a publicly accessible website, the tech stack can be broken down into observable layers:

1. Content Management System (CMS) or Platform

The CMS is the foundation most websites are built on. Common examples include WordPress, Shopify, Drupal, Webflow, Wix, Squarespace, and Ghost. Enterprise and custom-built sites may run on proprietary or headless CMS platforms.

2. Front-End Framework or Library

The JavaScript framework or library that powers the interactive elements of the website. Examples: React, Vue.js, Angular, Next.js, Nuxt, Svelte, and Astro. Some sites use plain JavaScript or jQuery without a modern framework.

3. Styling Framework

CSS frameworks used for layout and design. Examples: Tailwind CSS, Bootstrap, Bulma. These are often detectable from class names in the HTML.

4. Analytics and Tracking

Tools that collect visitor data. Examples: Google Analytics, Google Tag Manager, Meta Pixel, Hotjar, Segment, Mixpanel, Plausible. These load as JavaScript snippets and are usually detectable from the page source or network requests.

5. CDN (Content Delivery Network)

A network of servers that distributes content to users from a location close to them, improving performance. Examples: Cloudflare, Fastly, AWS CloudFront, Akamai. CDNs are detectable from DNS records and HTTP response headers.

6. Hosting and Infrastructure

The server infrastructure the site runs on. Examples: AWS EC2, Google Cloud, DigitalOcean, Vercel, Netlify, Heroku, WP Engine. Hosting providers can often be identified through IP address lookups and response headers.

7. Third-Party Services and Integrations

Additional tools loaded on the site. Examples: Stripe (payments), Intercom (customer messaging), Zendesk (support), Mailchimp (email marketing), Optimizely (A/B testing). These appear as third-party script loads in the network requests.

Why Find Another Site's Tech Stack?

Understanding a competitor's or prospect's technology choices is valuable in many ways:

Competitive intelligence: See how competitors have built their digital presence—what platforms, tools, and services they rely on.
Sales prospecting: Identify companies using specific technologies to target them with relevant offers (e.g., selling a Shopify app to Shopify merchants).
Developer inspiration: Learn how high-performing sites achieve specific features or performance characteristics.
Security assessment: Identify outdated software versions that may have known vulnerabilities.
Due diligence: Verify the infrastructure and technology claims of a website or company you are considering acquiring or partnering with.
Recruitment: Understand a company's engineering environment before applying for a job or sourcing talent.

Fastest Method: Automated Scanner

The easiest way to reveal a website's complete tech stack is to use Web Reveal—a free technology scanner that analyses any URL in real time and returns a full tech stack breakdown in seconds. No sign-up, no account, no limits.

Web Reveal detects:

CMS and e-commerce platforms
JavaScript frameworks and libraries
Analytics and marketing tools
CDN and performance infrastructure
Hosting providers and cloud platforms
Payment processors, chatbots, tag managers, and more

The Web Reveal Chrome extension surfaces tech stack information automatically as you browse any site. The bulk scanner lets you analyse multiple URLs at once, and an API is available for developers who need programmatic access.

Manual Inspection Techniques

For a hands-on approach—useful for learning or verifying automated results—here are the main manual methods:

View page source

Press Ctrl+U (Windows/Linux) or Cmd+U (Mac) to see the raw HTML. Look for CMS-specific paths (e.g., /wp-content/ for WordPress), generator meta tags, and script includes that reference framework names or CDN URLs.

Browser DevTools – Network tab

Open developer tools (F12), go to the Network tab, and reload the page. Look at the URLs of loaded scripts and stylesheets—framework names, CDN domains, and third-party service endpoints often appear here.

HTTP response headers

In the Network tab, click the main document request and check the Response Headers. Headers like Server, X-Powered-By, CF-Ray, and X-Vercel-Id reveal the web server, CDN, and hosting platform.

Browser console

Open the JavaScript console (F12 → Console). Type framework-specific checks:

window.React – confirms React if it returns an object
window.__VUE__ or window.Vue – confirms Vue.js
window.angular or getAllAngularRootElements() – confirms Angular
window.__NEXT_DATA__ – confirms Next.js
window.Shopify – confirms Shopify

What Can't Be Detected from Outside?

External tech stack scanners are limited to what is observable from HTTP responses. Server-side components that leave no external trace are generally not detectable:

Database engine: Whether a site uses MySQL, PostgreSQL, MongoDB, or Redis is not visible externally.
Back-end programming language: PHP, Python, Ruby, Go, Java, and Node.js are typically not distinguishable unless disclosed in headers like X-Powered-By or error messages.
Internal microservices: The internal architecture of the application is invisible.
DevOps tooling: CI/CD pipelines, container orchestration, and deployment infrastructure leave no external signals.

Famous Website Tech Stacks

For context, here are some well-documented tech stacks from major websites:

Airbnb: React, Node.js, Ruby on Rails, MySQL, AWS
Netflix: React, Node.js, Java, AWS, Cassandra
Shopify: Ruby on Rails, MySQL, Redis, Kubernetes, Google Cloud
GitHub: Ruby on Rails, MySQL, Redis, Go, AWS
Vercel: Next.js, AWS, Cloudflare (they use their own product)

Note that publicly visible tech stacks (frontend, CDN, analytics) are detectable by tools like Web Reveal, while the server-side components above are known from public engineering blog posts and StackShare profiles.

Frequently Asked Questions

What is a tech stack?

A tech stack is the complete set of software, frameworks, languages, and services used to build and run a website or application. For a website, this includes the CMS, front-end framework, analytics tools, CDN, and hosting provider.

How do I find the tech stack of a website?

Use Web Reveal—a free scanner that automatically detects and displays the full tech stack of any URL in seconds. For manual inspection, view the page source, HTTP headers, and browser console for technology-specific signals.

Why would I want to know a website's tech stack?

Common reasons include competitive intelligence, sales prospecting, developer research, security assessment, due diligence, and understanding what technologies a company's engineering team uses before applying for a job.

Can every part of a website's tech stack be detected?

No. Server-side components like databases and back-end languages are generally not externally visible. Scanners like Web Reveal focus on the observable front-end, middleware, and infrastructure signals that are exposed through HTTP responses.