Created in 2008 by Google engineer Pat Meenan and now maintained by Catchpoint, WebPageTest runs real-device tests from 40+ locations and returns waterfalls and filmstrips, the first choice for pinpointing a specific bottleneck.
CATEGORY · 🧪
Testing & Optimization providers
Testing and optimization tools for webmasters, covering A/B testing, speed testing, performance audits and usability testing.
All categories
⚡ Automation · 70
☁️ Cloud Server · 355
🚀 CDN Acceleration · 74
✅ Productivity · 99
🌐 Domain Registration · 147
📝 CMS · 114
💳 Payment Platform · 275
🛡️ Security · 111
📊 Analytics · 54
🤖 AI Platform · 71
💬 Communication · 196
🎨 Design Assets · 94
💰 Ad & Affiliate Monetization · 6
🗄️ Backend & Database (BaaS) · 1
📧 Email Service · 98
🔍 SEO & Marketing · 48
🛠️ Developer Tools · 64
📈 Monitoring & Observability · 63
⚖️ Compliance & Legal · 6
💾 Backup & Migration · 6
👥 Community & Forum · 6
🧪 Testing & Optimization · 6
📋 Form & Survey · 6
🤝 Freelance Marketplace · 6
🔤 Web Fonts · 6
🖼️ Media Optimization · 6
📉 Data Visualization & BI · 6
Testing & Optimization
Google Lighthouse is Google's open-source audit tool built into Chrome DevTools, reporting performance, accessibility, best practices, SEO, and PWA scores in one run, and serves as the de facto standard for performance work and CI regression gates.
Launched in 2013 by France's WP Media, WP Rocket is a paid-only WordPress caching and optimisation plugin bundling page cache, preloading, asset minification, and lazy loading in one out-of-the-box admin for small and mid-size sites.
Launched in 2009 in Canada, GTmetrix merges Lighthouse metrics with page size analysis into structured reports with impact-ranked recommendations, a common routine check-up tool for site owners, with free-tier limits on frequency and monitors.
Launched in 2009 by India's Wingify, VWO combines a visual editor, A/B testing, behaviour analytics, and personalisation on one platform for store and SaaS conversion work, with costs tiered by traffic.
Founded around 2019 in the UK, DebugBear provides synthetic and real user monitoring, testing key pages hourly or daily and tracking Core Web Vitals trends, with performance budgets and CI gates for frequently released product sites.