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Privacy-respecting technology stack detector. All detection runs locally; nothing about visited pages ever leaves your device. StackPeek tells you what any website is built with — and what that means for your next sales conversation. One click reveals the full technology stack — frameworks, CMS, ecommerce platform, analytics, CDN, hosting, web server, and more — then turns it into a prospect intelligence card you can act on in 30 seconds. ━━━━━━━━━━━━━━━━━━━━━━ 100% LOCAL — REAL PRIVACY ━━━━━━━━━━━━━━━━━━━━━━ All analysis runs inside your browser. StackPeek makes no network requests, has no analytics, no account, and never sends anything about the sites you visit anywhere. Nothing to leak, by design. (Plenty of "what runs this site" tools quietly collect and resell that data — StackPeek can't.) ━━━━━━━━━━━━━━━━━━━━━━ FOR BD & SALES: A PROSPECT INTEL CARD ━━━━━━━━━━━━━━━━━━━━━━ Beyond a tech list, StackPeek reads the stack the way a 20-year sales director would: • Maturity tier (Legacy → Cutting-Edge) and Spend tier (Bootstrap → Enterprise) • A FIT / qualification score and a Digital Sophistication score — each with a transparent "how is this calculated?" breakdown, so it's never a black box • Ranked opportunities, each with a one-line pitch • Spend, buying, and competitive signals • A ready-to-paste outreach hook Great for qualifying accounts, prepping cold outreach, competitive intel, and territory research. ━━━━━━━━━━━━━━━━━━━━━━ DETAILS ON DEMAND ━━━━━━━━━━━━━━━━━━━━━━ Click any detected technology to see exactly how it was found, its version and confidence, and what it signals for a deal. ━━━━━━━━━━━━━━━━━━━━━━ ONE-CLICK EXPORT ━━━━━━━━━━━━━━━━━━━━━━ Copy the full intel card (the brief + the detected stack) as JSON and drop it straight into your CRM, notes, or an email. ━━━━━━━━━━━━━━━━━━━━━━ CLEAN, FAST, FOCUSED ━━━━━━━━━━━━━━━━━━━━━━ A minimal popup. No ads, no upsells, no account. Who it's for: SDRs and AEs qualifying prospects, founders and agencies sizing up leads, marketers and engineers doing competitive research — and anyone curious what a site is built with. Note: StackPeek covers a curated set of common technologies (not every tool on the web), and the prospect scores are heuristics designed to speed up qualification — a fast first read, not gospel.
Jul 6, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.