Wappalyzer

Technology profiler that identifies the tech stack behind any website. Instantly discover what CMS, frameworks, analytics tools, and infrastructure a site uses.

Features

Technology Detection

• Web Frameworks: React, Vue, Angular, Next.js, etc.
• CMS: WordPress, Drupal, Contentful, etc.
• E-commerce: Shopify, WooCommerce, Magento, etc.
• Analytics: Google Analytics, Mixpanel, Segment, etc.
• CDN: Cloudflare, Fastly, Akamai, etc.
• JavaScript Libraries: jQuery, Lodash, Moment.js, etc.
• Programming Languages: PHP, Python, Ruby, Node.js, etc.
• Server Software: Nginx, Apache, IIS, etc.
• Payment Processors: Stripe, PayPal, Square, etc.
• Marketing Tools: HubSpot, Mailchimp, Intercom, etc.
• Security: SSL certificates, WAF providers, etc.

Browser Extension

• One-Click Detection: Instant tech stack visibility
• Icon Display: Visual indicators in toolbar
• Detailed View: Complete technology breakdown
• Version Info: Specific version numbers
• Categories: Organized by technology type
• Export: Save technology profiles

Website API

• Bulk Lookups: Analyze multiple sites
• Lead Generation: Find prospects using specific tech
• Market Research: Technology adoption trends
• Competitive Analysis: Compare tech stacks
• Historical Data: Track technology changes
• Alerts: Notifications for tech changes

Use Cases

Sales & Lead Generation

• Find companies using specific technologies
• Target prospects with relevant tech
• Build qualified lead lists
• Identify technology migration opportunities
• Competitor customer identification

Competitive Intelligence

• Reverse engineer competitor stack
• Track technology choices
• Monitor technology changes
• Benchmark against competitors
• Identify strategic shifts

Market Research

• Analyze technology trends
• Market share estimation
• Technology adoption rates
• Regional technology preferences
• Industry-specific patterns

Development & Strategy

• Research technology choices
• Validate architecture decisions
• Discover new tools
• Understand industry standards
• Technology due diligence

Browser Extension Usage

Installation

Available for:

• Chrome
• Firefox
• Edge
• Safari

Using the Extension

1. Install from browser store
2. Visit any website
3. Click Wappalyzer icon
4. View detected technologies
5. Click for detailed information

Example Output

Framework: Next.js 14.0.0
UI Library: React 18.2.0
CSS Framework: Tailwind CSS
Analytics: Google Analytics 4
CDN: Cloudflare
Hosting: Vercel

API Access

Technology Lookup API

curl -X GET "https://api.wappalyzer.com/v2/lookup/?urls=https://example.com" \
  -H "x-api-key: YOUR_API_KEY"

Response:

{
  "url": "https://example.com",
  "technologies": [
    {
      "name": "React",
      "categories": ["JavaScript frameworks"],
      "versions": ["18.2.0"],
      "confidence": 100
    },
    {
      "name": "Next.js",
      "categories": ["Web frameworks"],
      "versions": ["14.0.0"],
      "confidence": 100
    }
  ]
}

Lead Generation

# Find websites using specific technology
curl -X GET "https://api.wappalyzer.com/v2/technologies/shopify" \
  -H "x-api-key: YOUR_API_KEY"

Technology Categories

• Programming Languages: JavaScript, Python, PHP, Ruby, etc.
• Frameworks: React, Angular, Vue, Django, Rails, etc.
• CMS: WordPress, Drupal, Joomla, etc.
• E-commerce: Shopify, Magento, WooCommerce, etc.
• Analytics: GA, Mixpanel, Amplitude, etc.
• Tag Managers: GTM, Segment, Tealium, etc.
• CDN: Cloudflare, Fastly, Akamai, etc.
• Web Servers: Nginx, Apache, Caddy, etc.
• Databases: MySQL, PostgreSQL, MongoDB, etc.
• Caching: Redis, Memcached, Varnish, etc.
• Security: SSL, WAF, DDoS protection, etc.
• Marketing: Email, CRM, Automation, etc.
• Payment: Stripe, PayPal, Adyen, etc.

Pricing

Browser Extension

• Free: Basic technology detection
• Limited historical data

Pro Plans

• Starter: $149/month

  • 1,000 lookups/month
  • Email alerts
  • CSV export

• Business: $299/month

  • 10,000 lookups/month
  • API access
  • Advanced filters

• Enterprise: Custom pricing

  • Unlimited lookups
  • Custom integrations
  • Priority support

Integration Examples

C#

using System.Net.Http.Json;
using System.Text.Json.Nodes;

using var client = new HttpClient();
client.DefaultRequestHeaders.Add("x-api-key", "YOUR_API_KEY");

var result = await client.GetFromJsonAsync<JsonNode>(
    "https://api.wappalyzer.com/v2/lookup/?urls=https://example.com"
);

foreach (var tech in result![0]!["technologies"]!.AsArray())
{
    var name = tech!["name"]!.GetValue<string>();
    var version = tech["versions"]?.AsArray().FirstOrDefault()?.GetValue<string>() ?? "";
    Console.WriteLine(

        

            
quot;{name}: {version}");
}

Detection Methods

How It Works

• HTML Analysis: Parse page source
• HTTP Headers: Analyze response headers
• JavaScript Variables: Detect global variables
• Cookie Names: Identify by cookies
• Meta Tags: Check meta information
• DNS Records: Analyze DNS configuration
• SSL Certificates: Check certificate details
• Script Sources: Identify loaded scripts
• Pattern Matching: Regex-based detection

Use in Sales

Finding Prospects

Search: "Companies using Shopify in USA"
Filter: E-commerce > $1M revenue
Result: Qualified leads for Shopify apps

Competitive Analysis

Competitor uses: Intercom + HubSpot
Your pitch: "I noticed you use Intercom..."
Relevance: Higher conversion rates

Best Practices

• Use browser extension for quick research
• API for bulk analysis and automation
• Set up alerts for competitor tech changes
• Export data for CRM integration
• Combine with LinkedIn for full prospect view
• Track technology trends in your industry
• Validate leads before outreach
• Monitor your own tech stack visibility

Limitations

• Cannot detect all custom solutions
• Some sites actively hide technology
• Version detection not always accurate
• Requires public-facing pages
• May miss server-side technologies
• Confidence levels vary

Best For

• Sales Teams: Tech-based lead generation
• Developers: Research and inspiration
• Product Managers: Market research
• Competitive Intelligence: Track competitors
• Agencies: Prospect qualification
• Recruiters: Find companies with specific tech
• Investors: Due diligence research

Privacy Considerations

• Analyzes only public information
• No invasive scanning
• Respects robots.txt
• GDPR compliant
• Data from public web pages

Alternatives

• BuiltWith: More historical data
• SimilarTech: Similar functionality
• WhatRuns: Browser extension
• StackShare: Developer-submitted stacks

Wappalyzer is essential for anyone in sales, competitive intelligence, or development who needs to quickly understand what technologies power a website. The free browser extension alone is invaluable.