# Tech Stack Detector API - Wappalyzer & BuiltWith Alternative (`sndzcc/tech-stack-detector`) Actor

Find the technologies behind any website in bulk: CMS, ecommerce platform, analytics, ad pixels, marketing tools, live chat, payments, hosting and email provider. A Wappalyzer and BuiltWith alternative.

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

## Pricing

from $1.50 / 1,000 website 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 API: Wappalyzer & BuiltWith Alternative

Paste a list of websites and find out **what each one is built with**: CMS, ecommerce platform, JavaScript framework, analytics, ad pixels, marketing automation, CRM, live chat, payments, cookie banner, hosting, CDN and even the **email provider** (Google Workspace, Microsoft 365...).

**300+ technologies in 35+ categories**, one clean row per website, in bulk. No browser extension, no API key, no subscription: **pay per website**.

### Why this one?

- **Lead generation ready.** Find every Shopify store using Klaviyo, every WordPress site without a live chat, every company on HubSpot. Use **Only websites using** and you pay only for the matches.
- **Email provider included.** MX and SPF records reveal Google Workspace, Microsoft 365, Zoho, SendGrid, Mailchimp, Salesforce... something browser extensions can't see.
- **Columns you can filter.** `cms`, `ecommerce`, `analytics`, `advertising`, `marketing`, `liveChat`, `payments`, `hosting` and `emailHosting`, ready for Excel, Google Sheets or your CRM.
- **No false positives from text.** Technologies are detected from the code a site loads (scripts, headers, cookies, markup), not from words in its articles.
- **Fast and cheap.** Thousands of websites per run, a fraction of what BuiltWith or Wappalyzer subscriptions cost.

### Use cases

- **Sales prospecting:** build lists of companies using (or not using) a technology, e.g. Shopify stores without reviews app, sites using a competitor's tool.
- **Competitor research:** see which analytics, ads, CRM and payment tools competitors rely on.
- **Agencies:** qualify leads by CMS and stack before a call; audit clients' tracking pixels and cookie banners.
- **Market research:** measure the market share of CMSs, ecommerce platforms or chat tools in any list of sites.
- **Lead enrichment:** add stack data to your CRM accounts, then get their emails with our Email & Contact Scraper.

### Input

| Field | What it does |
|---|---|
| **Websites** | Websites or domains, one per line. Thousands at once are fine. |
| **Only websites using** | Optional. Keep only websites using any of these technologies or categories (`Shopify`, `Klaviyo`, `Live chat & support`...). The rest are free. |
| **Detect email provider** | Read MX and SPF records for email hosting and email services. On by default. |

```json
{
  "websites": ["allbirds.com", "gymshark.com", "techcrunch.com"],
  "onlyWithTechnologies": ["Shopify"],
  "checkDns": true
}
```

### Output

One row per website:

```json
{
  "website": "https://allbirds.com",
  "domain": "allbirds.com",
  "status": "ok",
  "finalUrl": "https://www.allbirds.com/",
  "title": "Allbirds: Sustainable Shoes & Clothing",
  "description": "...",
  "language": "en",
  "technologyCount": 8,
  "technologyNames": "Shopify, Swiper, Google Tag Manager, Microsoft Clarity, Attentive, Cloudflare, OneTrust, Microsoft 365",
  "cms": null,
  "ecommerce": "Shopify",
  "frameworks": [],
  "analytics": ["Google Tag Manager", "Microsoft Clarity"],
  "advertising": [],
  "marketing": ["Attentive"],
  "liveChat": [],
  "payments": [],
  "hosting": ["Cloudflare"],
  "emailHosting": "Microsoft 365",
  "emailDelivery": [],
  "categories": {"Ecommerce": ["Shopify"], "Cookie consent": ["OneTrust"], "...": []},
  "technologies": [
    {"name": "Shopify", "category": "Ecommerce", "version": null},
    {"name": "Microsoft 365", "category": "Email hosting", "version": null}
  ],
  "scrapedAt": "2026-10-25T12:00:00Z"
}
```

`version` is filled when the site reveals it (for example WordPress 6.6 or nginx 1.25).

### What it detects

CMS and website builders (WordPress, Drupal, Wix, Squarespace, Webflow, Framer, HubSpot CMS...), ecommerce (Shopify, WooCommerce, Magento, PrestaShop, BigCommerce, Salesforce Commerce Cloud, VTEX...), JavaScript frameworks (Next.js, Nuxt, React, Vue, Angular, Astro, SvelteKit...), analytics and tag managers (Google Analytics, GTM, Adobe, Matomo, Mixpanel, Amplitude, Segment, PostHog...), session replay (Hotjar, Clarity, FullStory...), ad pixels (Meta, Google Ads, LinkedIn, TikTok, X, Pinterest, Bing, Reddit, Criteo...), marketing automation and CRM (HubSpot, Marketo, Pardot, Klaviyo, Mailchimp, ActiveCampaign, Salesforce, ZoomInfo, 6sense...), live chat (Intercom, Drift, Zendesk, Tawk.to, Crisp, Tidio, Gorgias...), payments (Stripe, PayPal, Klarna, Afterpay, Adyen, Redsys...), cookie consent (OneTrust, Cookiebot, Didomi...), reviews (Trustpilot, Yotpo, Judge.me...), search (Algolia, Doofinder, Klevu...), A/B testing, error monitoring, hosting and CDN (Cloudflare, Fastly, Akamai, Vercel, Netlify, AWS...), web servers, back-end languages, WordPress plugins and email providers.

### Good to know

- Only the homepage is analyzed, which is where sites load their site-wide tools.
- Sites that block bots may be unreachable; they're listed in the `FAILED_WEBSITES` record and not charged.
- Tools that load only after a login or a click may not be visible from the homepage.

### Integrations

Send results to Google Sheets, HubSpot, Pipedrive, Airtable, Zapier, Make, n8n or your own API with Apify integrations and webhooks.

### How to use it

1. Click **Try for free** (or **Start**) at the top of this page.
2. Fill in the input, or keep the example to see it working in seconds.
3. Click **Start** and wait for the run to finish.
4. Download the results as **Excel, CSV, JSON or HTML**, or get them through the Apify API.

### How much does it cost?

**$0.0015 per website analyzed** ($1.50 per 1,000). No start fee, no monthly fee, and you only pay for the results saved to your dataset.

| Example | Cost |
|---|---|
| Stack of 100 competitor websites | about $0.15 |
| Qualify a 10,000-lead list | about $15.00 |

Apify's free plan includes monthly credit, so you can try it for free.

### FAQ

**Is it a Wappalyzer or BuiltWith alternative?**

Yes. It detects 300+ technologies from the code each website loads, in bulk, without a browser extension or subscription.

**Can I find only websites that use a specific technology?**

Yes. Fill in "Only websites using" (for example Shopify or Klaviyo) and you only pay for the websites that match.

**How does it find the email provider?**

From the domain's public MX and SPF records: Google Workspace, Microsoft 365, Zoho, SendGrid, Mailchimp, Salesforce and more.

**What if a technology is missing?**

Open an issue with the website and it will be added. Technologies that load only after login may not be visible.

### More tools from Sndz Data

- [BORME Scraper API - Spain New Company Leads Daily](https://apify.com/sndzcc/borme-spain-companies): every new company registered in Spain, daily
- [App Store & Google Play Reviews Scraper API](https://apify.com/sndzcc/app-reviews-scraper): App Store and Google Play reviews in one run
- [Job Scraper API - Greenhouse, Lever, Ashby & Workable](https://apify.com/sndzcc/ats-jobs-scraper): all open jobs from Greenhouse, Lever, Ashby and more
- [Google News Scraper API - Articles with Real URLs](https://apify.com/sndzcc/google-news-scraper): news by keyword or topic, with real article URLs
- [Email & Contact Scraper API - Emails, Phones & Socials](https://apify.com/sndzcc/contact-details-scraper): emails, phones and social profiles from any website
- [Telegram Scraper API - Channel Posts, Views & Media](https://apify.com/sndzcc/telegram-channel-scraper): posts, views and media from public Telegram channels
- [Brand Monitoring API - Mentions Radar for News & Reddit](https://apify.com/sndzcc/brand-mentions-radar): brand mentions across 9 sources, with sentiment
- [AI Image Upscaler API - Upscale & Enhance Photos 4x](https://apify.com/sndzcc/ai-image-upscaler): upscale and enhance photos 4x with AI
- [Keyword Research API - Google, YouTube & Amazon Ideas](https://apify.com/sndzcc/keyword-ideas-machine): hundreds of keyword ideas from 5 search engines
- [Polymarket & Kalshi API - Prediction Market Odds](https://apify.com/sndzcc/prediction-markets-scraper): live odds from Polymarket and Kalshi in one dataset
- [WHOIS & Domain Lookup API - DNS, SSL & Availability](https://apify.com/sndzcc/domain-intel): WHOIS, availability, DNS and SSL for any list of domains
- [Bluesky Scraper API - Posts, Profiles & Followers](https://apify.com/sndzcc/bluesky-scraper): posts, profiles and followers from Bluesky, no login
- [SEO Audit API - Broken Links, Meta Tags & Site Crawler](https://apify.com/sndzcc/seo-audit): SEO audit and broken link checker for any website
- [OCR API - Image & PDF to Text Extractor, 100+ Languages](https://apify.com/sndzcc/image-pdf-to-text): text from images and scanned PDFs, 100+ languages

### Support

Missing a technology? Open an issue on the **Issues** tab with the website and it will be added quickly.

If this Actor saves you time, a quick ⭐ review helps a lot and keeps it maintained. Thank you!

# Actor input Schema

## `websites` (type: `array`):

Websites or domains to analyze, one per line (acme.com or https://www.acme.com). Thousands at once are fine.

## `onlyWithTechnologies` (type: `array`):

Optional. Keep (and pay for) only the websites that use any of these technologies or categories, e.g. Shopify, WordPress, Klaviyo, HubSpot, Live chat & support. Leave empty to keep every website.

## `checkDns` (type: `boolean`):

Read the domain's MX and SPF records to find its email hosting (Google Workspace, Microsoft 365...) and email services (SendGrid, Mailchimp, HubSpot...).

## Actor input object example

```json
{
  "websites": [
    "https://www.allbirds.com",
    "https://www.python.org",
    "https://vercel.com"
  ],
  "checkDns": true
}
```

# Actor output Schema

## `overview` (type: `string`):

One row per website: CMS, ecommerce platform, analytics, ad pixels, marketing tools, live chat, payments, hosting and email provider.

## `allData` (type: `string`):

Every field, including each technology with its category and version.

# 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 = {
    "websites": [
        "https://www.allbirds.com",
        "https://www.python.org",
        "https://vercel.com"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("sndzcc/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 = { "websites": [
        "https://www.allbirds.com",
        "https://www.python.org",
        "https://vercel.com",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("sndzcc/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 '{
  "websites": [
    "https://www.allbirds.com",
    "https://www.python.org",
    "https://vercel.com"
  ]
}' |
apify call sndzcc/tech-stack-detector --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,sndzcc/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/PTVtUHjt7kz4NIyIF/builds/NEQN5YIx9DccSQDwZ/openapi.json