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Tech stack detection, web security, and API development.

Ecommerce Tech Stack Analysis: Shopify vs WooCommerce
Analyze the full tech stack behind Shopify, WooCommerce, and custom ecommerce sites. Detect payment processors, CDNs, analytics tools, and JavaScript frameworks via API.
Set Up Webhook Tech Stack Changes Alerts via API
Create webhook subscriptions that push HMAC-signed notifications when a monitored domain adds, removes, or updates technologies. Includes HMAC verification, Slack integration, and a full Python example.
How to Batch Scan 1,000 Websites for Tech Stack Data at Scale
Use the /analyze/batch endpoint to scan thousands of websites for technology data. Includes a Python script, curl examples, and tips for optimizing speed and cost.
Tech Stack Detection in Go: Build or Buy Guide
Build tech stack detection in Go with wappalyzergo or call the DetectZeStack API. Covers DNS detection, CPE mapping, batch analysis, and a full build-vs-buy comparison.
DetectZeStack MCP Server: Tech Detection for AI Agents (2026)
DetectZeStack is now available as an MCP server. Claude Code, Cursor, and Windsurf can detect tech stacks, scan security headers, and check SSL certs as native tools.
Track Website Tech Changes Over Time via API (2026)
Monitor when websites add, remove, or update technologies. Automated change feeds, historical snapshots, and webhook alerts via a developer-friendly API.
Website Vulnerability Scanner API: CVE + CPE Detection (2026)
Scan any website for known vulnerabilities by mapping detected technologies to CVEs in the National Vulnerability Database.
Website Tech Lookup for Competitor Analysis (2026)
Analyze competitor tech stacks with a free demo, Chrome extension, and API. Compare multiple sites side by side.
SecurityHeaders.com API Migration Guide (2026)
Step-by-step guide to migrating from the securityheaders.com API to DetectZeStack. Before/after code examples for CI/CD pipelines.
DNS Intelligence API: SPF, DKIM and DMARC Checks (2026)
Programmatically check DNS records, email authentication (SPF, DKIM, DMARC), and get email security grades via API.
SSL Certificate Check API for DevOps Teams (2026)
Monitor SSL certificate expiry, chain validity, and TLS configuration across domains via a simple API call.
SecurityHeaders.com API Is Shutting Down: Free Alternative for Header Scanning (2026)
Snyk is shutting down the securityheaders.com API in April 2026. The free scanner stays, but programmatic access is gone. Here's how to migrate to the DetectZeStack security headers API with 100 free requests/month.
WhatRuns API Key: Why It Doesn't Exist & What to Use Instead (2026)
WhatRuns is a browser extension only — there is no WhatRuns API key or documentation. Here's how to get programmatic tech stack detection with a free API.
How to Detect if a Website Uses Intercom: 5 Methods
Source inspection for messenger scripts, DOM element checks, cookies and local storage, JavaScript globals, and the DetectZeStack API — five reliable ways to detect Intercom on any website.
How to Detect if a Website Uses Shopify: 5 Methods
DNS CNAME lookup, HTML and JavaScript signatures, cookie fingerprinting, HTTP response headers, and the DetectZeStack API — five reliable ways to identify Shopify on any domain, including custom-branded stores.
How to Detect if a Website Uses HubSpot: 4 Methods
From checking page source for tracking scripts and inspecting DNS CNAME records to automated API detection, here are four reliable ways to detect HubSpot on any website.
How to Detect Google Analytics on Any Website: 5 Methods
From checking the page source for tracking snippets to programmatic API detection at scale, here are five reliable ways to detect Google Analytics and distinguish GA4 from Universal Analytics.
How to Detect AWS Hosting on Any Website: 5 Methods
From DNS CNAME records to HTTP headers and TLS certificates, here are five reliable ways to detect AWS hosting and distinguish between CloudFront, S3, ELB, Elastic Beanstalk, and more.
How to Audit Security Headers with Python: Grade Any Website A+ to F
Check security headers and grade any website from A+ to F using Python. Learn the manual way with requests, then automate with the DetectZeStack security headers API.
How to Detect Tailwind CSS on Any Website: 5 Methods
From inspecting utility class patterns in the DOM to automated API scanning, here are five reliable ways to detect Tailwind CSS and distinguish it from Bootstrap and other CSS frameworks.
How to Detect if a Website Uses Vue.js: 5 Methods
From DevTools console checks to programmatic API scanning, here are five reliable ways to detect Vue.js and distinguish it from Nuxt.js, Quasar, and plain Vue setups.
How to Detect if a Website Uses Next.js: 5 Methods
From page source inspection to programmatic API scanning, here are five reliable ways to detect Next.js and distinguish it from Gatsby, Remix, and plain React.
How to Detect if a Website Uses React: 4 Proven Methods
From DevTools console checks to programmatic API scanning, here are four reliable ways to detect React and distinguish it from Next.js, Gatsby, and Remix.
How to Check if a Website Uses WordPress (5 Methods That Actually Work)
From checking /wp-admin to DNS CNAME analysis, here are five reliable ways to detect WordPress sites — including edge cases like headless WordPress and WP Engine.
How to Detect What JavaScript Framework a Website Uses (React, Vue, Angular, Next.js)
JavaScript frameworks leave fingerprints in the DOM, window globals, and HTTP headers. Learn how to identify React, Vue, Angular, Next.js, and more.
Shopify vs WooCommerce: How to Tell Which E-Commerce Platform a Site Uses
Shopify hides behind custom domains. WooCommerce runs on WordPress. Learn how DNS CNAME detection and HTTP fingerprinting reveal which platform powers any store.
Free BuiltWith Alternatives in 2026: 5 Tools That Won't Cost You $295/Month
BuiltWith starts at $295/mo. Here are five alternatives — from free browser extensions to affordable APIs — for developers and small teams on a budget.
Tech Stack Detection with MCP and AI Agents: The Next Wave of Automation
MCP lets AI agents call external tools. Tech stack detection is a natural fit — sales agents, security auditors, and DevOps bots can all use it programmatically.
How to Detect the CDN and Hosting Provider of Any Website
DNS CNAME records, HTTP headers, TLS certificates, and IP ranges all reveal CDN and hosting providers. Here's how to identify Cloudflare, CloudFront, Fastly, and more.
How to Detect What CMS a Website Uses (WordPress, Shopify, Squarespace)
Manual CMS detection methods fail on headless setups. Learn how to identify WordPress, Shopify, Wix, and 8 other CMS platforms using DNS, TLS, and HTTP analysis.
Detect Any Website's Tech Stack with Python (Under 50 Lines)
A step-by-step Python tutorial for detecting website technologies. Covers single-domain scanning, batch processing, CSV export, and error handling.
Find Companies Using Stripe: A Guide to Technographic Prospecting
Use tech stack detection to find prospects who already use Stripe. Build a prospecting pipeline with the DetectZeStack API for a fraction of BuiltWith's $295/mo price.
Wappalyzer Went Closed Source: What Changed and What to Use Instead
Wappalyzer archived its open-source repo in August 2023. Here's what changed for users, what alternatives exist, and how DetectZeStack compares on price, features, and API access.
Browser Extensions Miss Your Infrastructure Layer: Why DNS and TLS Detection Matter
Browser extensions detect JavaScript and HTTP headers, but miss CDN providers, hosting platforms, and certificate authorities. DNS and TLS detection fills the gap.
DetectZeStack vs WhatRuns: API Access vs Browser Extension (2026)
WhatRuns has no API. DetectZeStack gives you programmatic tech detection with DNS/TLS analysis, CPE data, change tracking, and batch processing.
How Sales Teams Use Tech Stack Data for Competitive Intelligence
Real-world example: how one customer uses tech stack detection to scan SaaS competitors before sales calls. 960 API calls in one month.
What We Learned From Our First 1,768 API Calls
Build-in-public: real metrics from our first 1,768 API calls. Top domains scanned, cache hit rates, the partial results problem, and what surprised us most.
Track Technology Changes Over Time with the /changes API
Monitor when websites add, remove, or upgrade technologies. Queryable change feed with tier-gated history up to 365 days. BuiltWith charges $295/mo for this.
DNS-Based Technology Detection: Why Your CDN Can't Hide
Technical deep dive on CNAME-based detection. How DNS records reveal CDN, PaaS, and cloud providers even when sites block HTTP requests. 100+ signatures.
Website Technology Checker API: Detect Any Site's Tech Stack Programmatically
How to use a tech stack detection API with code examples in curl, Python, and JavaScript. Compare BuiltWith, Wappalyzer, and DetectZeStack pricing.
Tech Stack Enrichment for Sales Teams: Why Knowing What Your Prospects Run Changes Everything
Technographic data tells you more about a prospect's budget, sophistication, and buying signals than any revenue estimate. Here's how to use it.
CPE Identifiers Explained: A Practical Guide for Security Teams
What CPE is, how the naming convention works, and how to use CPE identifiers from DetectZeStack to query the NVD for known vulnerabilities.
BuiltWith vs Wappalyzer: Feature-by-Feature Comparison (2026)
A detailed comparison of BuiltWith and Wappalyzer — pricing, API access, detection accuracy, and where DetectZeStack fits in.
Wappalyzer vs WhatRuns: Which Tech Detection Tool Should You Use?
Both are browser extensions for tech detection, but with different approaches. Compare features, API access, and find the best fit for your workflow.
BuiltWith vs WhatRuns: Enterprise Data vs Free Extension
Two very different tools — BuiltWith is enterprise SaaS with massive data, WhatRuns is a free browser extension. Which one do you need?
Security Audit Any Website's Dependencies with CPE Data
Map detected technologies to the NVD vulnerability database using CPE identifiers. Automate security audits of any public website.
How to Build a Lead Enrichment Pipeline with Tech Detection
Use tech stack detection to enrich your sales leads. Build a pipeline that identifies prospects by their CMS, framework, CDN, and more.
BuiltWith vs Wappalyzer vs DetectZeStack: Which Tech Detection Tool Is Right for You?
An honest comparison of three tech stack detection tools. Features, pricing, accuracy, and API access compared side by side.
Detect Vulnerable Technologies on Any Website Using CPE Identifiers
Many technologies include CPE identifiers that map to the NVD vulnerability database. Learn how to use tech stack detection to find security risks automatically.
Detect Any Website's Tech Stack With a Single API Call
How DetectZeStack combines Wappalyzer fingerprinting, DNS CNAME analysis, and TLS certificate inspection to identify 7,300+ technologies.

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