Wappalyzer Alternative: Free Website Technology Lookup
Looking for Wappalyzer? The detector above tells you what a website runs on — CMS, JavaScript frameworks, web server, CDN, analytics and more — without installing an extension or creating an account. Where a version is visible, it also lists known CVEs for that version.
Wappalyzer has become a technographics business: lead lists, CRM enrichment and bulk lookups for sales teams. If you only need to know what one site is built with, you do not need those plans.
Enterno.io vs Wappalyzer
| Feature | Enterno.io | Wappalyzer |
|---|---|---|
| Price | Free · paid from $5/mo | Free account · Pro $250/mo · Business $450/mo · Enterprise $850+/mo |
| Free plan | Site checks within a daily quota, no sign-up | 50 lookups/mo, 5 website alerts, sample lead lists (sign-up) |
| API | REST v4 tech-detect, 200 calls/day free | Paid plans only; credits expire after 60 days |
| Browser extension | No, web tool only | Chrome, Firefox, Edge, Safari; iPhone app |
| Version and CVE info | Versions where exposed, known-CVE summary | Not listed on pricing |
| Lead lists and CRM enrichment | No | Yes: lists, Salesforce, HubSpot, Pipedrive |
Our live check of Wappalyzer, every 6 hours from our server in Moscow: it answered 25 of 25 checks in the last 30 days (100.0%), median response 134 ms. Last check: HTTP 200, .
Free online tool — tech detect checker: instant results, no signup.
How the Enterno tech detector works
The detector fetches the page and matches its HTML, response headers, cookies, script URLs and meta tags against the community-maintained webappanalyzer fingerprint set — more than 7,500 technology definitions — plus its own rules for popular CMSs and frameworks such as WordPress, 1C-Bitrix, Tilda, Next.js and Nuxt.
- Versions are reported where the page exposes them.
- CVE summary: detected versions are checked against a catalogue of known vulnerabilities, so an outdated jQuery or CMS stands out.
- Bot protection: if the plain request is blocked or returns an empty page, the detector retries with a headless browser.
For a CMS-only answer, the CMS detector is faster; to see the response headers behind a match, open the HTTP headers check.
Where Wappalyzer is better
- Lead generation. Lists of websites that use a given technology, with company and contact data. Enterno has nothing comparable.
- CRM enrichment for Salesforce, HubSpot and Pipedrive, plus Zapier, Make and Pabbly.
- Bulk lookups and an API with credit bundles for thousands of domains.
- Browser extensions for Chrome, Firefox, Edge and Safari, and an iPhone app, so detection happens as you browse.
- Website alerts for tracked sites, 5 of them even on the free account.
When Enterno fits better
- You need the stack of one site, now, without installing anything.
- You care about security: version-to-CVE matching is built in.
- You automate checks from code: REST API v4 exposes the detector as
tech-detect, and the free plan includes 200 API calls a day. - You also want page speed, SSL and security header checks for the same site.
For market-share data and site lists, see BuiltWith alternatives.
A call with an API key returns the same technologies, versions and CVE summary as the page above, as JSON:
curl -H "X-API-Key: $ENTERNO_KEY" \
"https://enterno.io/api/v4/tech-detect?url=https://example.com"That makes it easy to re-check a list of your own sites every week and diff the output, so a plugin or library that silently changed version does not go unnoticed.
Limits of any technology detector
Fingerprinting only sees what the site exposes. Server-side languages hidden behind a CDN, headless CMSs that render static HTML and stripped version strings all reduce what any tool can report, Wappalyzer included. Treat a missing technology as unknown, not absent, and confirm security findings against the site's own release notes before acting on them.
Typical uses for a one-off stack lookup
- Before a pitch or audit: see whether a prospect runs WordPress, Shopify or a custom framework, and which analytics and tag managers are on the page.
- Security triage: spot an outdated CMS or JavaScript library with known CVEs and decide what to patch first.
- Migration planning: list the CDN, web server and third-party scripts a site depends on before you move it.
- Competitor research: see which payment, chat or search widgets a competitor uses.
For each of these, one lookup per site is enough. Lead lists and CRM enrichment only pay off when you repeat this across thousands of domains, which is the job Wappalyzer's paid plans are priced for.
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Frequently Asked Questions
Is Wappalyzer free?
A free account includes 50 technology lookups and email verifications per month, 5 website alerts and sample lead lists. Paid plans start at $250/month (Pro) and are needed for lead lists, APIs and CRM integrations.
Do I need a browser extension to detect a site's stack?
No. Enter the URL in the tool on this page. Wappalyzer offers extensions for Chrome, Firefox, Edge and Safari if you prefer detection while browsing.
How many technologies can Enterno detect?
The detector loads more than 7,500 fingerprint definitions from the community webappanalyzer set, plus its own rules for common CMSs and frameworks.
Is there an API for technology detection?
Yes. REST API v4 exposes the detector as the tech-detect tool; the free plan includes 200 calls a day. Wappalyzer's API requires a paid plan.
Can I get a list of all sites using a technology?
Not with Enterno. That is Wappalyzer's lead list product, or BuiltWith's.
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