7 Best Wappalyzer Alternatives in 2026
Wappalyzer was the de facto tech stack detector for a decade — free browser extension, accurate detection, simple lookup API. Pricing tiers tripled in 2024-2025 and the free extension started returning less data. Here are 7 alternatives ranked by detection accuracy, pricing, and use case.
TL;DR Recommendation
- 🥇 Best free Wappalyzer alternative: WhatRuns — free Chrome extension with reasonable coverage
- 🥈 Best paid replacement: BuiltWith — deeper historical data, free lookup tool
- 🥉 Best for broader competitor research: Analook — tech detection + pricing + SEO + social in one audit
- 💎 Best for sales prospecting: Datanyze — bundles tech stack + contact data
Why People Look for Wappalyzer Alternatives
- Pricing tripled 2024-2025. Entry plan went from ~$99/mo to ~$249/mo. Lookups-per-month tiers tightened. The price hike pushed solo developers and small teams off the platform.
- Free extension data reduction. The free browser extension stopped showing some category detail (e.g., specific framework versions) — pushing free users to upgrade or switch.
- Better-value alternatives emerged. BuiltWith publishes more historical data; WhatRuns is free; SimilarTech bundles tech + traffic data. The competitive landscape moved while Wappalyzer raised prices.
Quick Comparison
| Tool | Free Tier | Starts At | Best For |
|---|---|---|---|
| Analook | 2 reports/mo | $19/mo | Founder competitive teardowns |
| BuiltWith | Yes | $295/month Basic | Sales prospecting + tech-trend research at scale |
| WhatRuns | Yes | Free | Anyone who used Wappalyzer's free tier and got pus |
| SimilarTech | Yes | Custom pricing for full access | Tech-stack-based market sizing and prospecting |
| NetCraft | Yes | Enterprise pricing for monitoring | Security teams + infra audits |
| HG Insights (formerly TheStack) | Limited | Custom | Enterprise B2B sales targeting specific tech stack |
| Datanyze | Limited | enterprise tiers | SDRs targeting prospects by tech stack |
The 7 Alternatives, Ranked
#1 — Analook
Best for FoundersPrice: Free for 2 reports/month · $19/month Pro · $5 single report
Full disclosure: I built Analook. Wappalyzer answers "what's their tech stack?" Analook answers "what's their entire growth strategy, including tech stack?" — pricing-page extraction, GitHub repos, social presence, SEO, AI verdict in one 60-second audit.
vs Wappalyzer specifically: Wappalyzer wins on raw category breadth — it detects 2000+ technologies. Analook surfaces the strategically relevant ones (analytics, payments, frameworks) plus the surrounding competitive context Wappalyzer doesn't show.
Best for: Founders researching competitor strategy, not just tech. Try free at analook.com.
#2 — BuiltWith
Price: Free lookup · $295/month Basic · enterprise tiers
Wappalyzer's biggest direct competitor — broader historical archive, more verticals tracked, and used by many sales teams for B2B prospecting. Free public lookup tool for individual sites is genuinely useful.
Best for: Sales prospecting + tech-trend research at scale. Free lookup tool at builtwith.com.
#3 — WhatRuns
Price: Free (Chrome extension + web)
Free Chrome extension and web tool — meaningful alternative if you only need basic tech detection. Smaller technology catalog than Wappalyzer/BuiltWith, but covers the major frameworks, analytics, and CMS platforms.
Best for: Anyone who used Wappalyzer's free tier and got pushed out by reduced data.
#4 — SimilarTech
Price: Free limited · Custom pricing for full access
Bundles technology detection with traffic and audience data — useful for the "who else uses this stack" question. Strong in adtech/martech vertical specifically.
Best for: Tech-stack-based market sizing and prospecting. Adtech/martech focus.
#5 — NetCraft
Price: Free site report · Enterprise pricing for monitoring
Best-known for SSL/server fingerprinting and hosting infrastructure detection. Less framework-detection-focused than Wappalyzer. Strong in cybersecurity and infrastructure-monitoring use cases.
Best for: Security teams + infra audits. Free site report at netcraft.com.
#6 — HG Insights (formerly TheStack)
Price: Custom enterprise pricing
Enterprise tech-stack intelligence + market sizing — used by software vendors to identify accounts running specific competitor stacks. Not a Wappalyzer alternative for casual lookup; built for B2B sales orgs.
Best for: Enterprise B2B sales targeting specific tech stacks.
#7 — Datanyze
Price: $39/month Pro · enterprise tiers
B2B sales intelligence platform — tech stack detection bundled with contact data. Not a pure tech detector; oriented toward outbound sales workflows.
Best for: SDRs targeting prospects by tech stack. Bundles email + phone enrichment.
Decision Tree: Which Should You Pick?
Just need a free Chrome extension replacement? → WhatRuns
Need historical tech stack data for a site? → BuiltWith
Need tech stack + full competitive picture? → Analook
Sales team targeting accounts by tech stack? → Datanyze or HG Insights
Security audit / infrastructure focus? → NetCraft
Adtech/martech vertical specifically? → SimilarTech
When to Use Analook Instead of Wappalyzer
"I just need to see what frameworks a competitor is using"
→ WhatRuns (free) for basic detection. Analook if you also want to see pricing, GitHub repos, and social presence in the same audit.
"Wappalyzer pricing tripled — what's a paid alternative with similar coverage?"
→ BuiltWith Basic at $295/month has deeper data + free site lookup. Or skip pure-tech-detection and use Analook ($19/mo) for the broader signals you probably actually need.
"I'm a B2B sales team — we use Wappalyzer for tech-stack-based prospecting"
→ Datanyze ($39) for SMB workflows. HG Insights or LeadSift for enterprise prospecting at scale.
Try Analook Free
Analyze any competitor in 60 seconds.
2 free reports/month · No credit card · SEO + traffic + social + Product Hunt + GitHub + AI verdict
Or get a single report for $5 — no subscription
Frequently Asked Questions
What is the best free Wappalyzer alternative in 2026?
WhatRuns is the closest free direct replacement — Chrome extension + web tool, no signup required. For broader research (tech stack + pricing + SEO + social), Analook's free tier (2 reports/month) covers more ground than Wappalyzer ever did.
Why did Wappalyzer raise prices?
Wappalyzer was acquired by Symanto in 2023 and the new owners shifted positioning toward enterprise sales intelligence rather than the developer/SEO tool the community knew. The pricing change reflects the new buyer profile (B2B sales orgs, not individuals).
Is BuiltWith better than Wappalyzer?
For historical tech stack data and B2B sales prospecting — yes, BuiltWith is the industry standard. For real-time browser-level detection, Wappalyzer's extension was historically faster and cleaner. With Wappalyzer's recent extension data reduction, BuiltWith's free lookup tool is now competitive even for casual use.
Can I still use Wappalyzer's Chrome extension?
Yes, the extension is still available and free. Some detection categories return less detail than in 2023 — particularly framework versioning and analytics specifics — pushing users toward the paid API tiers.
Which tool is most accurate for tech stack detection?
It depends on the technology category. BuiltWith leads in coverage breadth (60K+ technologies). Wappalyzer historically led in JS-framework detection. NetCraft leads in hosting/SSL/server detection. For analytics specifically, all four major tools (Wappalyzer, BuiltWith, WhatRuns, SimilarTech) achieve >95% accuracy.