BuiltWith is the reference for technology lookups, and its paid plans start at a few hundred dollars a month (Basic was listed at $295/month in October 2026). That fits teams that need its database of sites by technology. If you already have a list of domains and need to know what they run, paying per domain costs far less.
monitorChanges for recurring checks.from apify_client import ApifyClient # pip install apify-client
client = ApifyClient("<YOUR_APIFY_TOKEN>")
run = client.actor("fguiraud/website-tech-dns-whois-ssl").call(run_input={
"domains": [
"wordpress.org",
"apify.com",
"bbc.co.uk"
],
"checks": [
"tech",
"hosting",
"whois"
]
})
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
print(item["domain"], item.get("technologiesByCategory"))
No Python? Open the Actor page, paste your input in the form and press Start; results export to JSON, CSV or Excel.
Fields from a real run on 2026-10-01 (long values shortened):
{
"domain": "wordpress.org",
"status": "ok",
"technologyNames": [
"WordPress",
"MySQL",
"Google Font API",
"..."
],
"technologiesByCategory": {
"Blogs": [
"WordPress"
],
"CMS": [
"WordPress"
],
"Databases": [
"MySQL"
],
"Editors": [
"Gutenberg"
],
"Font scripts": [
"Google Font API"
],
"Miscellaneous": [
"Open Graph",
"RSS"
],
"Page builders": [
"WordPress Block Editor",
"WordPress Site Editor"
],
"Performance": [
"Priority Hints"
],
"Programming languages": [
"PHP"
],
"Reverse proxies": [
"Nginx"
],
"Security": [
"HSTS"
],
"Tag managers": [
"Google Tag Manager"
],
"Web servers": [
"Nginx"
],
"WordPress plugins": [
"Gutenberg"
]
},
"hosting": {
"ip": "66.6.42.252",
"provider": "WordPress.org",
"network": "WORDPRESS-ORG",
"country": null,
"cidr": "66.6.42.0/24"
}
}
$0.004 per domain: 1,000 domains cost $4.
Can it find all sites that use a technology?
No. It checks the domains you give it; BuiltWith-style “all sites using X” lists need their database.
How fresh is the data?
Live: each run fetches the site at that moment.
Can an AI agent use it?
Yes. It is an MCP server at https://mcp.apify.com/?tools=fguiraud/website-tech-dns-whois-ssl (listed in the official MCP registry), and there is an agent skill for Claude Code, Codex and Cursor. Field-name guesses such as url or urls are accepted.