# Tech Stack Detector: Website Technology, CMS & Frameworks (`tidelane/tech-stack-detector`) Actor

Find out which technologies any website uses: CMS, e-commerce platform, JavaScript frameworks, analytics, tag managers, CDN, hosting, payment, marketing tools and 7,600+ more, with versions where visible. Real browser, open fingerprint database, bulk URL lists.

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

## Pricing

from $4.20 / 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.
Since this Actor supports Apify Store discounts, the price gets lower the higher subscription plan you have.

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, CMS & Frameworks

See what any website is built with. Paste a list of URLs and get every detected technology: **CMS, e-commerce platform, JavaScript frameworks, analytics and tag managers, CDN and hosting, payment providers, marketing and consent tools**, with version numbers where the site reveals them.

- ✅ **7,600+ technologies** from the open Wappalyzer-format fingerprint database (webappanalyzer), refreshed with every build
- ✅ **Real browser**: runs the page in Chromium, so JavaScript frameworks and tags that load dynamically are found too
- ✅ **Versions and confidence** for each technology, grouped by category
- ✅ **Bulk lists**: hundreds of sites per run, 3 in parallel
- ✅ **Fair billing**: sites that fail, time out, block bots or are excluded by robots.txt are free

### What can you use it for?

- **Sales prospecting:** find shops running Shopify, sites using a competitor's tool, or companies without analytics
- **Market research:** count CMS or framework market share in a list of websites
- **Agencies:** audit a client's stack before a pitch or a migration
- **Security and IT:** spot outdated library versions across your own sites

### Input example

```json
{ "urls": ["https://wordpress.org", "https://www.allbirds.com", "https://vercel.com"], "minConfidence": 50 }
```

### Output example

Real output for wordpress.org (technology details shortened to three of fourteen):

```json
{
    "url": "https://wordpress.org/",
    "finalUrl": "https://wordpress.org/",
    "statusCode": 200,
    "title": "Blog Tool, Publishing Platform, and CMS – WordPress.org",
    "technologyCount": 14,
    "technologies": [
        { "name": "WordPress", "version": "7.2", "confidence": 100, "categories": ["CMS", "Blogs"], "website": "https://wordpress.org", "implied": false },
        { "name": "PHP", "version": null, "confidence": 100, "categories": ["Programming languages"], "website": "https://php.net", "implied": false },
        { "name": "Nginx", "version": null, "confidence": 100, "categories": ["Web servers", "Reverse proxies"], "website": "https://nginx.org/en", "implied": false }
    ],
    "byCategory": { "Analytics": ["Google Analytics"], "CMS": ["WordPress"], "Blogs": ["WordPress"], "Databases": ["MySQL"] },
    "technologyNames": ["Google Analytics", "WordPress", "MySQL", "Google Font API", "Open Graph", "RSS", "WordPress Block Editor", "WordPress Site Editor", "Priority Hints", "PHP", "HSTS", "Google Tag Manager", "Nginx", "Gutenberg"],
    "analyzedAt": "2026-10-20T21:10:15.500Z"
}
```

Other results from the same test: allbirds.com showed Shopify, Shop Pay, Apple Pay, PayPal, OneTrust, Cloudflare and 18 more; vercel.com showed Next.js 16.5.0-canary.18, React, Vercel Analytics and Sentry. `implied: true` means the technology was inferred from another one (WordPress implies PHP and MySQL). A summary per URL is saved as `OUTPUT` in the key-value store.

### Pricing

A fixed price per analyzed website. Failed pages are free. In our tests 7 sites took about 70 seconds.

Paid Apify plans pay less: 10% off on Starter, 20% on Scale and 30% on Business and higher plans.

### FAQ

**How accurate is it?** It finds what the page exposes: HTML, scripts, headers, cookies, meta tags and JavaScript globals. Server-side tools that leave no trace (for example a database behind an API) cannot be seen by anyone from the outside.

**Why did a site fail?** Some sites block automated browsers or time out; others forbid automated access in robots.txt. Both are shown in `OUTPUT` and not charged.

**Where does the technology list come from?** From the open-source webappanalyzer project (GPL-3.0), which continues the Wappalyzer fingerprint format. The Actor downloads the latest version when it is built.

***

#### Impressum

Levi Griesinger, Tidelane Data\
Besigheimer Straße 18\
74369, Löchgau, Deutschland\
E-Mail: LeviGriesinger@gmail.com

# Actor input Schema

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

Pages to analyze, one per line. "example.com" works too. Usually the home page is enough.

## `minConfidence` (type: `integer`):

Only report technologies detected with at least this confidence. Lower it to see weaker hints.

## `respectRobotsTxt` (type: `boolean`):

Skip pages whose robots.txt forbids automated access. Turn off only for your own sites or with the owner's permission.

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

Pages that take longer fail and are not charged.

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

More is faster but needs more memory.

## Actor input object example

```json
{
  "urls": [
    "https://wordpress.org",
    "https://www.allbirds.com",
    "https://vercel.com"
  ],
  "minConfidence": 50,
  "respectRobotsTxt": true,
  "timeoutSecs": 45,
  "maxConcurrency": 3
}
```

# Actor output Schema

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

All results of the run as dataset items.

## `summary` (type: `string`):

Summary per input with status (ok, error and the reason).

# 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": [
        "https://wordpress.org",
        "https://www.allbirds.com",
        "https://vercel.com"
    ]
};

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

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

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,tidelane/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/epvcobKcO6oL13USB/builds/PfPqc1MBxYWbd7PoM/openapi.json