Detect the tech stack of any website in bulk. A Wappalyzer and BuiltWith alternative for CMS, shop system (Shopify, Shopware, WooCommerce), analytics, consent manager, CDN and frameworks, plus email provider and SaaS from DNS, and GDPR signals. Weekly tech stack change monitor.
Price of site-analyzed lowered to USD 0.005 (2026-10-21)
site-analyzed: USD 0.01 → USD 0.005 (partial-result stays USD 0.002; USD 5 per 1,000 sites; Actor start unchanged at USD 0.00005).
README price table and worked-example costs updated to the new price. No change to code, input schema, events, defaults or output.
README: use-case examples, no code or price change (2026-10-17)
New "Use-case examples" subsection under Examples, linking the three use-case example tasks published on 2026-10-17, each with a one-line note on who it is for and what it returns.
Existing example link and the sibling links are kept; sibling link texts now use the current Store titles.
No change to code, input schema, pricing, events, defaults or output.
README: cross-links and examples, no code or price change (2026-10-08, build 0.1.5)
Product name in the README now matches the Store title ("Website Technology & Tech Stack Detector: BuiltWith Alternative").
New Examples section linking the published example task "Detect the tech stack of competitor websites".
"Other Lindenwerk Data Actors" lists all six sibling Actors by their current Store titles and Store URLs.
No change to code, input schema, pricing, events, defaults or output.
All notable changes to this Actor are listed here.
Listing quality update (2026-10-06, before the first public release)
README: starts with an H2 "What is ...?" (Apify Store shows the Actor name as the page H1), new step-by-step
"How to ..." section (first run, own profile, schedule, integrations, API) and a list of the other Lindenwerk Data Actors.
Input form: fields grouped into sections (Filters, Change monitoring, Limits and performance), form title "Tech Stack Detector" and a "Quickest try" hint in the form description.
No change to the code, prices, events, output fields or defaults.
Listing update (2026-10-06, before the first public release)
README: the first three lines now state what the Actor does, the price per site and that no login or third-party
API key is needed.
New section "Use it from AI agents (MCP)": how to call the Actor through the Apify MCP server (mcp.apify.com), a
single-domain input (examples/input-single-domain-agent.json), a real compact result row and the cost of one call.
FAQ: comparison with Wappalyzer and BuiltWith, accuracy limits, blocked sites, GDPR, cost of a single lookup.
No change to the code, input or output.
Launch pricing (2026-10-06, before the first public release)
site-analyzed: USD 0.004 → USD 0.01 per website.
partial-result: USD 0.001 → USD 0.002.
Rows with no detection stay free. The Actor start stays at the platform minimum (USD 0.00005).
The earlier prices were never charged to anyone: the Actor was not public yet.
0.1 (2026-10-05)
First release.
Original fingerprint database: about 370 technologies in 54 categories, with a focus on DACH/EU. It covers CMS,
shop systems, consent managers, analytics, CDN, frameworks, payments and chat.
DNS layer: MX (email provider), SPF (sending services), DMARC policy, NS, the www CNAME, and TXT verification
records (SaaS tools; token values are never output).
GDPR/DSGVO signals and a security-header score.
Monitor mode (monitorKey, onlyChanged) reports technologies added or removed since the previous run.
Pay per event:
site-analyzed: USD 0.004 (draft price, replaced before launch; see 2026-10-06).
partial-result: USD 0.001 (draft price) for blocked sites with DNS or header results.
Rows with no detection are free.
The run stops cleanly at the maximum charge per run.
robots.txt is read first (RFC 9309), there is one page request per site, there's an SSRF guard, and it runs with
no proxies and no login.
