Reveals any website's complete tech stack in one click. 80+ tools detected across 30+ categories. Everything runs in your browser — no account, no external requests, no data sent anywhere.
SaaS Detective reads the signals every tool leaves behind — JavaScript globals, DOM structure, response headers, and script source paths — and surfaces them instantly in a clean popup.
Unlike BuiltWith, it doesn't send your browsing data to a server. Unlike Wappalyzer's free tier, it doesn't throttle results. It runs entirely in Chrome using only data from pages you've already loaded.
Navigate to any page — competitor, prospect, or client site.
SaaS Detective scans JS globals, DOM, headers, and script paths.
Every tool categorized, with detection reason shown for each finding.
Not just "React" — "React detected via __NEXT_DATA__ and _next/ script paths." You see the evidence, not just the verdict.
Everything runs in your browser using Chrome extension APIs. No browsing data is ever sent to any server.
Detection happens against the page you've already loaded. Results appear in under a second, no loading spinners.
Framework, hosting, CDN, analytics, marketing, payments, CRM, support, error tracking, A/B testing, and more.
From Next.js and Vercel to Stripe, Intercom, HubSpot, Datadog, and beyond.
No subscription, no account, no usage limits. Built as a developer tool, not a lead generation machine.
Free Chrome extension. No account required. Runs entirely in your browser.