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プロフィール:ゲイリー・ブリューワーがウェブサイト解析で1,400万ドル($14M)のアイデアにどう偶然出会ったか
月商 — · 創業者—人 · 従業員—人 · —
—(—)· 創業 — · 記事掲載 November 13th, 2023 · — · 元の記事

何の商売か
誰がソフトウェア開発企業、マーケティング企業、事業開発部門の担当者など、B2Bで事業を営む会社の意思決定者や担当者(米国中心)。特に、新規顧客開拓(リードジェネレーション)や競合分析に時間を要している企業
何のために競合他社がどんなウェブサイト技術を使っているか、見込み客がどんな技術を使っているかなどを効率的に把握し、市場分析やリード獲得の時間を短縮したい
何を買うかウェブサイトの技術スタック(使われている技術)を特定する「BuiltWith」の有料版(ウェブサービス)。基本プラン月額295ドル(約44,250円)、プロプラン月額495ドル(約74,250円)、チームプラン月額995ドル(約149,250円)のサブスクリプションで利用する。無料版もあり。

創業者がオンラインディレクトリ「AboutUs」の創業者に自身のサイトを見せたところ、全レコードにBuiltWithへのリンクが追加され、トラフィックが10倍に増加した。主な集客は口コミとオーガニック検索。月商188万ドル(約2億8,200万円)は記事時点(2023年11月)の年間2,260万ドルからの逆算で、従業員数は不明。

売値の出典: 記事の本文(2023年時点)(2026-10-13 取得)

Who is Gary Brewer?

Gary Brewer is the founder of BuiltWith, a website profiling tool that's used for business intelligence, lead generation, and competitive analysis. Brewer has worked as a software engineer for over a decade He's also been a judge for the Australian AIMIA awards.

What problem does BuiltWith solve?

Competitor analysis can be time-consuming and confusing.

How did Gary come up with the idea for BuiltWith?

While searching for his next idea, Brewer naturally looked at other websites for inspiration. While looking through the source code of a website (a neat trick programmers often do), he found a piece of code unique to Java and could deduce that the website was built using that technology. And then it clicked him. He said: "Wouldn't it be cool to know the exact technology every website uses?"

How did Gary Brewer build the initial version of BuiltWith?

Gary started building scrapers and a database of technologies by mapping specific pieces of code to identify the technology stack used by various websites. Immediately after the official launch, he noticed an increase in traffic. builtwith.com : internet archive BuiltWith offers a free version that shows the technology stack used by your competitors, while the paid version provides access to a vast database of everything available on the internet.

What was the growth strategy for BuiltWith and how did they scale?

The main growth push came after Gary showed his website to the founder of AboutUs (an online directory with information from millions of businesses) and he decided to add a BuiltWith link to every record. This 10x'd their traffic. Now, most of his customers come from word of mouth & organic traffic.

What's the pricing strategy for BuiltWith?

Gary has three subscriptions ranging from the basic one at $295 to a Pro at $495, and a team plan at $995.

What platform/tools does BuiltWith use?

Custom Built Stack 232 using newDocumentReady(function () { $(".database-result-bottom").unbind().click(function() { $(this).find(".database-result-bottom-contents").toggle(); }) // Mobile DB view toggle — switch between the compact row list (default) // and the rich card view, remembered in localStorage. Instant, no reload. // Leading ';' guards against ASI: the preceding statement ends in `})`. ;(function () { var group = document.querySelector('.db-view-toggle-group'); if (!group) return; var rowsPanel = document.getElementById('db-view-rows'); var cardsPanel = document.getElementById('db-view-cards'); function applyView(view) { var isCards = view === 'cards'; if (cardsPanel) cardsPanel.classList.toggle('hidden', !isCards); if (rowsPanel) rowsPanel.classList.toggle('hidden', isCards); group.querySelectorAll('.db-view-toggle').forEach(function (b) { b.classList.toggle('db-view-toggle-active', b.dataset.view === view); }); } var saved = 'rows'; try { saved = window.localStorage.getItem('dbMobileView') || 'rows'; } catch (e) {} applyView(saved === 'cards' ? 'cards' : 'rows'); group.querySelectorAll('.db-view-toggle').forEach(function (b) { b.addEventListener('click', function () { var v = b.dataset.view; try { window.localStorage.setItem('dbMobileView', v); } catch (e) {} applyView(v); }); }); })(); // Search UX: debounced auto-submit + global "/" focus shortcut. // Server-side pg_search is GIN-indexed and returns in <50ms; combined // with the page render, total feedback after the debounce window is // ~500ms — close enough to "live" without an XHR/Turbo refactor. var searchInput = document.getElementById('search'); if (searchInput) { var debounceTimer = null; var lastSubmittedValue = searchInput.value; searchInput.addEventListener('input', function () { clearTimeout(debounceTimer); debounceTimer = setTimeout(function () { // Don't submit if the value hasn't changed (e.g. arrow keys). if (searchInput.value === lastSubmittedValue) return; lastSubmittedValue = searchInput.value; searchInput.form && searchInput.form.submit(); }, 350); }); // Enter still submits immediately — short-circuits the debounce. searchInput.addEventListener('keydown', function (e) { if (e.key === 'Enter') { e.preventDefault(); clearTimeout(debounceTimer); searchInput.form && searchInput.form.submit(); } }); } // Global "/" shortcut to focus search — GitHub/Linear pattern. document.addEventListener('keydown', function (e) { if (e.key !== '/' || e.metaKey || e.ctrlKey || e.altKey) return; var t = e.target; if (t && (t.tagName === 'INPUT' || t.tagName === 'TEXTAREA' || t.isContentEditable)) return; var s = document.getElementById('search'); if (s) { e.preventDefault(); s.focus(); s.select(); } }); function prettySliderValue(func, value) { var n = Math.round(Number(value)); if (func == "money") { if (n >= 1000000000) return "$" + (n / 1000000000).toFixed(n % 1000000000 === 0 ? 0 : 1) + "B"; if (n >= 1000000) return "$" + (n / 1000000).toFixed(n % 1000000 === 0 ? 0 : 1) + "M"; if (n >= 1000) return "$" + (n / 1000).toFixed(n % 1000 === 0 ? 0 : 1) + "K"; return "$" + numberWithCommas(n); } else if (func == "daystomonths") { return (n / 30) + " months"; } else if (func == "hours") { return n + " hours"; } else { return n; } } function getInitialSliderValues(el) { var initial = el.dataset.initial; var defMin = Number(el.dataset.defaultmin); var defMax = Number(el.dataset.defaultmax); if (initial) { var parts = initial.split("|"); var a = parts[0] === "" ? defMin : Number(parts[0]); var b = parts[1] === "" ? defMax : Number(parts[1]); return [a, b]; } return [defMin, defMax]; } function createTwoProngedSlider(id) { var el = document.querySelector(id); if (!el || el.noUiSlider) return; var min = Number(el.dataset.min); var max = Number(el.dataset.max); var step = Number(el.dataset.step); var cleanfunc = el.dataset.cleanfunc; var values = getInitialSliderValues(el); var container = el.closest(".range-filter") || el.parentElement; var input = container.querySelector('input[type="hidden"]'); var label = container.querySelector(".preview-label"); noUiSlider.create(el, { start: values, connect: true, step: step, range: { min: min, max: max }, behaviour: "tap-drag" }); el.noUiSlider.on("update", function(vals) { var lo = Math.round(Number(vals[0])); var hi = Math.round(Number(vals[1])); if (label) label.textContent = prettySliderValue(cleanfunc, lo) + " – " + prettySliderValue(cleanfunc, hi); if (input) input.value = lo + "|" + hi; }); el.noUiSlider.on("change", function() { var form = el.closest("form"); if (form) form.submit(); }); } createTwoProngedSlider("#revenue-slider"); createTwoProngedSlider("#starting-costs-slider"); createTwoProngedSlider("#time-to-revenue-slider"); createTwoProngedSlider("#min-hours-per-week"); createTwoProngedSlider("#market-size"); createTwoProngedSlider("#startup-costs"); createTwoProngedSlider("#case-studies"); $(".mobile-filters-applied-button").click(function() { $(".database-filters").addClass("inView") }) $(".close-mobile-filters").click(function() { $(".database-filters").removeClass("inView") }) // Explore "More filters" — reveal/hide the secondary filter pills. var moreFiltersToggle = document.getElementById("explore-more-filters-toggle"); if (moreFiltersToggle) { moreFiltersToggle.addEventListener("click", function () { var panel = document.querySelector(".explore-secondary-filters"); if (!panel) return; var nowHidden = panel.classList.toggle("hidden"); moreFiltersToggle.setAttribute("aria-expanded", String(!nowHidden)); }); } // Infinite scroll lives in its OWN init block below (initSSInfiniteScroll), // deliberately decoupled from this newDocumentReady callback. Anything that // throws above (a slider lib that didn't load from CDN, a jQuery plugin, // etc.) would otherwise abort the rest of THIS callback and silently kill // infinite scroll — the "only works on a hard reload" bug. Keeping it // separate means nothing here can take it down. }); // ---- Infinite scroll (pro/admin/free-access; table + tile views) ---- // Driven off Kaminari's next-page URL, which the partial renders into // #infinite-scroll-sentinel only when the visitor is eligible. We fetch the // next full page, lift out the children of its .database-append-target // container (<tbody> rows for the table view, tiles for the grid views), // append them, then chain to that page's own sentinel URL. DOMParser does // NOT execute the fetched page's scripts, so only content nodes are added — // sliders/search/PostHog never re-run. The sentinel is absent for non-pro // visitors, so this whole block no-ops for them and their paywall is intact. // // Idempotent: guarded by sentinel.dataset.ssInfiniteInit so re-running on // pageshow (bfcache/back-forward restore, where DOMContentLoaded never fires) // can't double-observe an already-wired sentinel. function initSSInfiniteScroll() { var sentinel = document.getElementById('infinite-scroll-sentinel'); if (!sentinel || !sentinel.dataset.nextUrl) return; if (sentinel.dataset.ssInfiniteInit === '1') return; sentinel.dataset.ssInfiniteInit = '1'; // The "database" view renders TWO append targets — the mobile card list // and the desktop table tbody (one is display:none per viewport). Append // to both so infinite scroll works no matter which is visible. Tile views // have a single target. containers[0] drives the loaded-count readout. var containers = Array.prototype.slice.call(document.querySelectorAll('.database-append-target')); if (!containers.length) { delete sentinel.dataset.ssInfiniteInit; return; } var container = containers[0]; // Infinite scroll is live — hide the prev/next fallback for JS clients. var paginate = document.querySelector('.paginate'); if (paginate) paginate.style.display = 'none'; var numResults = document.querySelector('.num-results'); var loadingEl = sentinel.querySelector('.infinite-scroll-loading'); var nextUrl = sentinel.dataset.nextUrl; var loading = false; // Item nodes only — tile partials (e.g. _video) emit a sibling <style> // per render; those are global CSS we already have, so skip them when // appending and counting. function itemNodes(root) { return Array.prototype.filter.call(root.children, function (n) { return n.tagName !== 'STYLE' && n.tagName !== 'SCRIPT'; }); } function updateCount() { if (!numResults) return; var count = itemNodes(container).length; // Keep the "of N …" suffix; just bump the leading loaded-count. numResults.textContent = numResults.textContent.replace(/Showing\s+[\d,]+/, 'Showing ' + count.toLocaleString()); } function loadMore() { if (loading || !nextUrl) return; loading = true; if (loadingEl) loadingEl.style.display = ''; fetch(nextUrl, { headers: { 'X-Requested-With': 'XMLHttpRequest' } }) .then(function (r) { return r.text(); }) .then(function (html) { var doc = new DOMParser().parseFromString(html, 'text/html'); var srcs = doc.querySelectorAll('.database-append-target'); Array.prototype.forEach.call(srcs, function (src, i) { var dest = containers[i]; if (!dest) return; itemNodes(src).forEach(function (node) { dest.appendChild(document.importNode(node, true)); }); }); var ns = doc.getElementById('infinite-scroll-sentinel'); nextUrl = (ns && ns.dataset.nextUrl) || null; sentinel.dataset.nextUrl = nextUrl || ''; updateCount(); if (!nextUrl) { observer.disconnect(); sentinel.style.display = 'none'; } }) .catch(function () { /* leave nextUrl intact so a later scroll retries */ }) .finally(function () { loading = false; if (loadingEl) loadingEl.style.display = 'none'; }); } var observer = new IntersectionObserver(function (entries) { entries.forEach(function (e) { if (e.isIntersecting) loadMore(); }); }, { rootMargin: '600px 0px' }); observer.observe(sentinel); } newDocumentReady(initSSInfiniteScroll); // bfcache/back-forward restore doesn't fire DOMContentLoaded; pageshow does. // Idempotency guard above makes the re-call a no-op when already wired. window.addEventListener('pageshow', initSSInfiniteScroll); .blur-row { filter: blur(4px); pointer-events: none; user-select: none; } /* Mobile view toggle (rows ↔ cards) */ .db-view-toggle { display: inline-flex; align-items: center; gap: 5px; padding: 5px 11px; border: 0; border-radius: 6px; background: transparent; color: #64748b; font-size: 12px; font-weight: 600; cursor: pointer; transition: background-color 0.12s, color 0.12s; } .db-view-toggle-active { background: #0f172a; color: #ffffff; } .database-video-grid { display: grid; grid-template-columns: 1fr; gap: 18px; } @media (min-width: 768px) { .database-video-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } } /* Airbnb-style range slider (uses noUiSlider) */ .range-filter { display: inline-flex; flex-direction: column; justify-content: center; gap: 4px; padding: 6px 16px 10px; border: 1px solid rgb(226 232 240); background: #fff; border-radius: 9999px; min-width: 220px; margin-bottom: 0 !important; } .range-filter .range-filter-header { display: flex; align-items: baseline; gap: 6px; line-height: 1; } .range-filter .range-filter-header label { font-size: 0.875rem; color: rgb(100 116 139); font-weight: 500; margin: 0 !important; line-height: 1.2; flex-shrink: 0; } .range-filter .range-filter-header label::after { content: "|"; margin-left: 6px; color: rgb(203 213 225); font-weight: 400; } .range-filter .preview-label { font-size: 0.875rem; color: rgb(15 23 42); font-weight: 600; line-height: 1.2; margin: 0 !important; white-space: nowrap; } .range-filter .filter-slider.noUi-target { height: 3px; background: rgb(226 232 240); border: 0; box-shadow: none; border-radius: 9999px; margin: 3px 6px 0; } .range-filter.is-active { border-color: rgb(15 23 42); background: rgb(241 245 249); } .range-filter.is-active .range-filter-header label { color: rgb(15 23 42); } .range-filter .filter-slider .noUi-connect { background: rgb(15 23 42); } .range-filter .filter-slider .noUi-handle { height: 20px; width: 20px; top: -8px; right: -10px; border-radius: 9999px; background: #fff; border: 1px solid rgb(203 213 225); box-shadow: 0 1px 2px rgba(15, 23, 42, 0.12), 0 2px 4px rgba(15, 23, 42, 0.08); cursor: grab; transition: transform 0.1s ease, box-shadow 0.1s ease, border-color 0.1s ease; outline: none; } .range-filter .filter-slider .noUi-handle::before, .range-filter .filter-slider .noUi-handle::after { display: none; } .range-filter .filter-slider .noUi-handle:hover { border-color: rgb(15 23 42); transform: scale(1.05); } .range-filter .filter-slider .noUi-handle.noUi-active, .range-filter .filter-slider .noUi-handle:focus-visible { cursor: grabbing; box-shadow: 0 0 0 6px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(15, 23, 42, 0.18); border-color: rgb(15 23 42); } .range-filter .filter-slider.noUi-horizontal { height: 4px; } .range-filter input[type="hidden"] { display: none; }

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More about BuiltWith:

Who is the owner of BuiltWith? When did Gary Brewer start BuiltWith? What is Gary Brewer's net worth? How much money has Gary Brewer made from BuiltWith? {"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Who is the owner of BuiltWith?","acceptedAnswer":{"@type":"Answer","text":"Gary Brewer is the founder of BuiltWith."}},{"@type":"Question","name":"When did Gary Brewer start BuiltWith?","acceptedAnswer":{"@type":"Answer","text":"2007"}},{"@type":"Question","name":"What is Gary Brewer's net worth?","acceptedAnswer":{"@type":"Answer","text":"Gary Brewer's business makes an average of $1.88M/month."}},{"@type":"Question","name":"How much money has Gary Brewer made from BuiltWith?","acceptedAnswer":{"@type":"Answer","text":"Gary Brewer started the business in 2007, and currently makes an average of $22.6M/year."}}]}