# Tech Stack Detector: Website Technology Lookup & Wappalyzer (`boubap/tech-stack-detector`) Actor

Detect the technologies behind any website: CMS, e-commerce platform, analytics, frameworks, CDN, servers and 7,000+ more. Bulk lookup, versions and categories, cheap pay-per-result.

- **URL**: https://apify.com/boubap/tech-stack-detector.md
- **Developed by:** [Baptiste Bouton](https://apify.com/boubap) (community)
- **Categories:** Developer tools, SEO tools, Lead generation
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

$3.00 / 1,000 url analyzeds

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## Tech Stack Detector: Website Technology Lookup & Wappalyzer

**Tech stack detector** and **website technology lookup** for any domain: CMS, e-commerce platform, analytics and marketing tools, JavaScript frameworks, CDN, web servers, payment providers and **7,000+ other technologies**. Paste a list of domains, get versions and categories for each one in a clean table or JSON. It costs **$3 per 1,000 websites**, and websites that fail to load are **free**.

### BuiltWith / Wappalyzer alternative

Uses the same open-source [webappanalyzer](https://github.com/enthec/webappanalyzer) fingerprint database as Wappalyzer (7,628 technologies across 90+ categories, with version numbers where the site exposes them), at a fraction of the price of BuiltWith or a Wappalyzer subscription, with no monthly commitment. Websites that fail to load are never billed.

### Use cases

- **Find every Shopify / WordPress / HubSpot site in a list**: paste your domain list and filter the output by `technologies[].name`.
- **Lead qualification**: find every prospect running Shopify, WordPress, HubSpot or a competitor's product.
- **Sales prospecting lists**: segment thousands of domains by the technology they use.
- **Competitor research**: see what your competitors' sites run on and which versions they use.
- **Market share analysis**: measure how widely a technology is adopted across a list of sites.
- **Tech and security audits**: spot outdated CMS or library versions across a portfolio of sites.

### Input

```json
{
  "urls": ["wordpress.org", "shopify.com", "https://apify.com"],
  "maxConcurrency": 10,
  "timeoutSecs": 20
}
```

Domains without `https://` are fine.

### Output

One item per website:

```json
{
  "url": "wordpress.org",
  "finalUrl": "https://wordpress.org/",
  "statusCode": 200,
  "technologies": [
    { "name": "WordPress", "version": "6.7", "categories": ["CMS", "Blogs"], "confidence": 100, "website": "https://wordpress.org" },
    { "name": "PHP", "version": null, "categories": ["Programming languages"], "confidence": 100, "website": "http://php.net" },
    { "name": "jQuery", "version": "3.7.1", "categories": ["JavaScript libraries"], "confidence": 100, "website": "https://jquery.com" }
  ],
  "categories": ["Blogs", "CMS", "JavaScript libraries", "Programming languages"],
  "error": null
}
```

Export it as JSON, CSV or Excel, or read it through the Apify API.

### Pricing

You pay **$0.003 per website analyzed** ($3 per 1,000). Websites that time out, block the request or don't exist are returned with an `error` field and are **not charged**.

### FAQ

**Does it render JavaScript?** No. It fetches the page over HTTP and matches headers, cookies, HTML, meta tags and script URLs, with no browser involved. This keeps it fast and cheap, but technologies that only appear after JavaScript executes (client-side-rendered widgets, for example) can be missed.

**What are the limits?** Up to `maxConcurrency` websites in parallel (default 10, max 50) and `timeoutSecs` per website (default 20s); the HTML matched is capped at 512 KB per page.

**Can I use it from my code, Make, Zapier or an AI agent?** Yes. Call it through the Apify API, the Make and Zapier integrations, or the Apify MCP server for AI agents.

**Does it collect personal data?** No. It only reads public technical signals from websites.

**Do I need an API key?** No.

### License

GPL-3.0. Fingerprints come from [webappanalyzer](https://github.com/enthec/webappanalyzer) (GPL-3.0).

# Actor input Schema

## `urls` (type: `array`):

Domains or URLs to analyze (e.g. shopify.com or https://example.com/page).

## `maxConcurrency` (type: `integer`):

How many websites to analyze in parallel.

## `timeoutSecs` (type: `integer`):

Websites slower than this are reported as errors (not billed).

## Actor input object example

```json
{
  "urls": [
    "wordpress.org",
    "shopify.com",
    "apify.com"
  ],
  "maxConcurrency": 10,
  "timeoutSecs": 20
}
```

# Actor output Schema

## `results` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "urls": [
        "wordpress.org",
        "shopify.com",
        "apify.com"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("boubap/tech-stack-detector").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "urls": [
        "wordpress.org",
        "shopify.com",
        "apify.com",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("boubap/tech-stack-detector").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "urls": [
    "wordpress.org",
    "shopify.com",
    "apify.com"
  ]
}' |
apify call boubap/tech-stack-detector --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,boubap/tech-stack-detector"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/q0ftXCBshIqpnc0ua/builds/sdTkIm6bzXTHJYkRZ/openapi.json