Best Wappalyzer Alternative API in 2026

If you need to detect what technologies a website uses — frameworks, CMS, hosting providers, analytics tools — the go-to answer has been Wappalyzer. But at $250/month for API access, it's prohibitively expensive for most developers and startups.

We built StackPeek as a developer-friendly alternative: the same tech stack detection via a simple REST API, starting at $9/month. Here's how it compares.

The Problem with Wappalyzer's Pricing

Wappalyzer's browser extension is great — and free. But the moment you need programmatic access, pricing jumps dramatically:

• Wappalyzer API: $250/month for 25,000 lookups
• BuiltWith API: $295/month for basic access
• SimilarTech: Enterprise pricing (contact sales)

For indie developers, side projects, or startups doing competitive analysis, these prices don't make sense. You might need 5,000 scans per month — not 25,000. You shouldn't have to pay $250 for that.

StackPeek vs Wappalyzer vs BuiltWith

Where Wappalyzer wins

Wappalyzer detects 1,500+ technologies compared to StackPeek's 120+. If you need deep detection of niche CMS plugins, obscure JavaScript libraries, or specific WordPress themes, Wappalyzer's database is larger. BuiltWith goes even further with 90,000+ technologies and historical data.

Where StackPeek wins

Price and speed. StackPeek is 28x cheaper than Wappalyzer for API access. It doesn't use a headless browser — detection is done via HTTP headers, HTML analysis, script fingerprinting, and meta tag parsing. This makes it significantly faster (<500ms vs 2-5s) and more predictable.

For the 90% use case — detecting the framework, CMS, hosting, CDN, analytics, and payment provider — 120+ technologies covers it. You probably don't need to know which WordPress theme variant someone is running.

Quick Start: Detect Any Website's Stack

curl "https://stackpeek.web.app/api/v1/detect?url=https://vercel.com"

Response:

{
  "url": "https://vercel.com",
  "technologies": [
    { "name": "Next.js", "category": "framework", "confidence": 0.95 },
    { "name": "Vercel", "category": "hosting", "confidence": 0.99 },
    { "name": "Tailwind CSS", "category": "css", "confidence": 0.92 },
    { "name": "Turbopack", "category": "build_tool", "confidence": 0.88 }
  ],
  "scanTime": 342
}

No API key needed for the free tier. 100 scans per day, completely free.

Use Cases

• Competitive analysis: See what tech your competitors use before choosing your own stack
• Lead generation: Find companies using specific technologies (e.g., "all sites using Shopify")
• Security auditing: Detect outdated frameworks or exposed infrastructure details
• Market research: Understand technology adoption trends across industries
• Sales intelligence: Tailor outreach based on a prospect's tech stack

Who Should Use StackPeek vs Wappalyzer

Use StackPeek if: You need programmatic tech stack detection, you're cost-sensitive, you care about speed, and 120+ technology fingerprints covers your use case. Perfect for indie developers, startups, and small teams.

Use Wappalyzer if: You need the deepest possible detection database (1,500+ techs), you have budget for $250+/month, or you need their browser extension ecosystem. Better for enterprise market research teams.

Use BuiltWith if: You need historical technology data, market share statistics, or enterprise-grade lead lists. Priced for large sales teams doing account-based marketing.

Pricing Comparison Summary

StackPeek delivers the core 90% of tech stack detection at a fraction of the price. Try it free →