The Wappalyzer Alternative With Full API Access
Wappalyzer's free extension doesn't include API access. Their API starts at $450/mo. DetectZeStack gives you the same detection engine with full REST API from $9/mo.
Pricing Comparison
Wappalyzer
DetectZeStack
BuiltWith
Feature Comparison
| Feature | Wappalyzer | DetectZeStack |
|---|---|---|
| API access price | $450/mo (Team plan) | Free (100 req/mo), $9/mo (1K req) |
| Free browser extension | Yes | No (API-only) |
| Detection engine | Proprietary (closed-source since 2023) | wappalyzergo (open-source fork) |
| Technology signatures | ~3,800 | 7,200+ (same source, community-updated) |
| DNS infrastructure detection | No | Yes (111 CDN/hosting signatures) |
| TLS certificate analysis | No | Yes (8 issuer patterns) |
| CPE identifiers | No | Yes (when available) |
| Stack comparison endpoint | No | Yes (shared/unique tech across sites) |
| Batch analysis | Yes | Yes (up to 10 URLs per request) |
| Historical data | No | Yes (tracks changes going forward) |
| Webhook alerts | No | Yes (analysis notifications) |
| Lead list generation | Yes (higher plans) | No (API-only, build your own) |
Why Developers Switch from Wappalyzer
Same Detection Engine, Lower Price
Wappalyzer's detection signatures were open-source until 2023. DetectZeStack uses wappalyzergo, the Go implementation with community-maintained signatures. Same detection quality, 50x cheaper API access.
DNS + TLS Layers
Wappalyzer only fingerprints HTTP responses. DetectZeStack adds DNS CNAME resolution and TLS certificate inspection to identify CDNs, hosting, and security infrastructure invisible to Wappalyzer.
CPE Vulnerability Data
Detected technologies include CPE identifiers (when available) so you can check for known vulnerabilities in the NVD. Wappalyzer has no security data. Read about CPE vulnerability detection.
Stack Comparison
Compare tech stacks across multiple websites in a single /compare API call. Get shared and unique technologies instantly. Wappalyzer requires separate requests and manual diffing.
No Extension Lock-In
Wappalyzer's free tier is a browser extension, not an API. For automation, CI/CD, lead enrichment, or security scanning, you need their $450/mo API. DetectZeStack is API-first from day one.
Webhook Monitoring
Subscribe to domains and get webhook alerts each time they are analyzed. Track competitors or clients automatically. Wappalyzer has no webhook support.
What Happened to Wappalyzer's API?
Wappalyzer was acquired by Hostinger in 2023, and the open-source repository was archived. The detection engine that powered thousands of integrations is no longer publicly maintained.
API access now requires the $450/month Team plan. The free browser extension still works for manual lookups, but there's no free programmatic access.
DetectZeStack uses wappalyzergo—the open-source Go implementation of the same fingerprinting engine, maintained by ProjectDiscovery with community-updated signatures (7,200+ technologies). Same detection quality, plus DNS and TLS layers that Wappalyzer never had:
curl "https://detectzestack.p.rapidapi.com/analyze?url=example.com" \
-H "X-RapidAPI-Key: YOUR_API_KEY" \
-H "X-RapidAPI-Host: detectzestack.p.rapidapi.com"Free tier: 100 requests/month, no credit card. For the full tutorial, read Website Technology Checker API: The Complete Guide.
Frequently Asked Questions
What happened to Wappalyzer's API pricing?
After Wappalyzer was acquired by Hostinger in 2023, the open-source repository was archived and API pricing consolidated to the Team plan at $450/month. The free browser extension still works for manual lookups but doesn't include API access. DetectZeStack offers the same detection engine via the open-source wappalyzergo library, with API access from $9/month (or free at 100 requests/month).
How much does Wappalyzer API cost?
Wappalyzer's API access starts at $450/month on their Team plan. The free browser extension does not include API access. DetectZeStack offers full API access on every tier, starting with a free plan (100 requests/month) and paid plans from $9/month.
What is the best free alternative to Wappalyzer API?
DetectZeStack offers 100 free API requests per month with no credit card required. Unlike Wappalyzer's free browser extension, DetectZeStack gives you a full REST API with JSON responses, batch analysis, stack comparison, and webhook monitoring.
Is Wappalyzer open source?
Wappalyzer's browser extension was open source until 2023, when it was closed-sourced after acquisition. The detection engine that powers DetectZeStack (wappalyzergo) is an open-source Go implementation that maintains community-updated technology signatures.
Can I use DetectZeStack instead of the Wappalyzer extension?
DetectZeStack is an API service, not a browser extension. If you need API access for automation, integrations, or backend processing, DetectZeStack is a direct replacement at a fraction of the cost. For casual browsing detection, Wappalyzer's free extension still works.
Switch from Wappalyzer Today
100 requests/month free. No credit card required. Full API access on every tier.
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