# Website Tech Stack Detector (Wappalyzer Alternative) – Bulk (`shawndunn/website-tech-stack-detector`) Actor Detect the technologies behind any list of websites: CMS, ecommerce platform, JS frameworks, analytics, ad pixels, chat, payments, CDN and hosting. 90+ signatures, fast bulk HTTP (no browser), clean per-category output for lead lists. - **URL**: https://apify.com/shawndunn/website-tech-stack-detector.md - **Developed by:** [CarrierDaily](https://apify.com/shawndunn) (community) - **Categories:** Lead generation, Developer tools - **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks - **User rating**: No ratings yet ## Pricing $2.00 / 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 ## Website Tech Stack Detector (Wappalyzer Alternative) – Bulk Detect the technologies behind any list of websites: CMS, ecommerce platform, JS frameworks, analytics, ad pixels, chat, payments, CDN and hosting. 90+ signatures, fast bulk HTTP (no browser), clean per-category output for lead lists. ### Why this actor - No-browser HTTP engine = cheap and fast at 10k+ domains; byCategory output drops straight into CRM filters; no start fee. - Pay only for results: **$2.00 per 1,000 website analyzeds**, no start fee, failed lookups are free. - Robust: automatic retries with exponential backoff, respects `Retry-After`, per-item error rows instead of crashed runs. - Clean, flat JSON/CSV/Excel output ready for Google Sheets, Make, Zapier, n8n, Clay, or the Apify API. ### Use cases - Build lead lists of Shopify / WooCommerce / HubSpot users - Agency prospecting: find sites without analytics or on outdated stacks - Competitive research on marketing tooling - Enrich CRM accounts with technographics ### How to use Website Tech Stack Detector 1. Enter a list of domains or URLs (e.g. `vercel.com`, `allbirds.com`). 2. Click **Start**. Sites are fetched in parallel over plain HTTP, no browser. 3. Export one row per site with technologies grouped by category, or filter in Sheets to build lead lists (e.g. all Shopify stores using Klaviyo). ### Input | Field | Type | Description | |---|---|---| | `urls` | array | Domains or URLs to analyze (e.g. shopify.com, https://vercel.com). Thousands per run are fine. | | `concurrency` | integer | Parallel requests. | | `maxItems` | integer | 0 = no limit. | Example input: ```json { "urls": [ "vercel.com", "allbirds.com", "wordpress.org" ] } ``` ### Output Each dataset item looks like this (real sample from a test run, long fields trimmed): ```json { "inputUrl": "https://wordpress.org", "finalUrl": "https://wordpress.org/", "domain": "wordpress.org", "statusCode": 200, "title": "Blog Tool, Publishing Platform, and CMS – WordPress.org", "generator": "WordPress 7.2-alpha-64337", "technologies": [ { "name": "WordPress", "category": "CMS" }, { "name": "WooCommerce", "category": "Ecommerce" }, { "name": "Google Tag Manager", "category": "Tag manager" }, "\u2026" ], "technologyNames": [ "WordPress", "WooCommerce", "Google Tag Manager", "\u2026" ], "byCategory": { "CMS": [ "WordPress" ], "Ecommerce": [ "WooCommerce" ], "Tag manager": [ "Google Tag Manager" ], "Web server": [ "Nginx" ], "Fonts": [ "Google Fonts" ] }, "technologyCount": 5, "server": "nginx", "scrapedAt": "2026-10-14T05:54:48+00:00" } ``` Rows that could not be processed contain an `error` field and are **not charged**. ### Comparison: Website Tech Stack Detector vs alternatives | | This actor | Typical alternatives | |---|---|---| | Cost for 10,000 sites | ~$20, pay per site | BuiltWith Pro from $295/month | | Bulk input | Thousands of URLs per run | Browser extension: one site at a time | | Output | Flat JSON/CSV by category | Mostly UI or paid API | | Account / API key | Not needed | Required | ### Pricing Pay-per-event: **$0.002** per website analyzed (= $2.00 / 1,000). Use **Max results** to cap spend. Apify's free plan credit covers thousands of results per month. ### Integrations & API Run on a schedule in Apify Console, call via the Apify API / Python & JS clients, or connect to Make, Zapier, n8n, Google Sheets, Slack and webhooks. Works as a tool for AI agents via Apify MCP. ### Use with AI agents (MCP) Website Tech Stack Detector is a ready-made tool for AI agents (BuiltWith and Wappalyzer alternative technology lookup). Connect it to Claude, ChatGPT, Cursor, VS Code or any MCP client with the Apify MCP server: ``` https://mcp.apify.com/?tools=shawndunn/website-tech-stack-detector ``` Agents can also call it directly via the Apify API (`POST https://api.apify.com/v2/acts/shawndunn~website-tech-stack-detector/run-sync-get-dataset-items`) and pay per result, with no subscription. ### FAQ **Is it legal?** The actor only reads publicly available data from public endpoints, without logins, and does not bypass paywalls or access controls. You are responsible for using the data in line with applicable laws (e.g. GDPR) and the source sites' terms. **Something broke?** Open an issue in the Issues tab; we typically respond within 24 hours and ship fixes fast. **Is this a free BuiltWith alternative?** It is pay-per-result: $0.002 per website, and Apify's free monthly credit covers a few thousand sites. **Can I find all Shopify or WordPress sites in my list?** Yes. Run your domain list, then filter `byCategory` (e.g. `Ecommerce` or `CMS`) or `technologyNames`. **Why might a technology be missed?** Detection uses HTML, headers, cookies and script signatures without running JavaScript, so tools loaded only after user interaction can be missed. ### More tools by shawndunn - [ATS Jobs Scraper](https://apify.com/shawndunn/ats-jobs-scraper) - Scrape jobs from Greenhouse, Lever, Ashby, Workable, SmartRecruiters & Recruitee boards. - [Domain Intelligence Checker](https://apify.com/shawndunn/domain-intelligence-whois-dns-ssl) - Bulk domain lookup: WHOIS/RDAP registrar and expiry dates, DNS, MX email provider, SPF, DMARC and SSL certificate expiry. - [Sitemap URL Extractor](https://apify.com/shawndunn/sitemap-url-extractor) - Extract every URL from any website's XML sitemaps: auto-discovery via robots. - [Apple App Store Scraper](https://apify.com/shawndunn/apple-app-store-search-details) - Scrape Apple App Store search results, app details, ratings, prices and developer apps in any country. # Actor input Schema ## `urls` (type: `array`): Domains or URLs to analyze (e.g. shopify.com, https://vercel.com). Thousands per run are fine. ## `concurrency` (type: `integer`): Parallel requests. ## `maxItems` (type: `integer`): 0 = no limit. ## Actor input object example ```json { "urls": [ "vercel.com", "allbirds.com", "wordpress.org" ], "concurrency": 10, "maxItems": 0 } ``` # Actor output Schema ## `results` (type: `string`): All dataset items # 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 '' with your token const client = new ApifyClient({ token: '', }); // Prepare Actor input const input = { "urls": [ "vercel.com", "allbirds.com", "wordpress.org" ] }; // Run the Actor and wait for it to finish const run = await client.actor("shawndunn/website-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 '' with your token. client = ApifyClient("") # Prepare the Actor input run_input = { "urls": [ "vercel.com", "allbirds.com", "wordpress.org", ] } # Run the Actor and wait for it to finish run = client.actor("shawndunn/website-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": [ "vercel.com", "allbirds.com", "wordpress.org" ] }' | apify call shawndunn/website-tech-stack-detector --silent --output-dataset ``` ## MCP server setup ```json { "mcpServers": { "apify": { "type": "http", "url": "https://mcp.apify.com/?tools=fetch-actor-details,shawndunn/website-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 ` 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/2tpPim5L2kF6yQ7ih/builds/HnqZi0i7Yq0xCw5Xs/openapi.json