| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| Web Analytics & Measurement | |
| Google Analytics Google platform measuring website traffic and visitor behavior | 59.7M sites |
| Google Tag Manager Tag management system deploying analytics and marketing tags without code | 63.8M sites |
| MonsterInsights WordPress plugin connecting sites to Google Analytics | 1.5M sites |
| Marketing & Email Campaigns | |
| Leadfeeder Website visitor identification tool surfacing B2B sales leads from traffic. | 34.9K sites |
| Forms & Lead Capture | |
| Contact Form 7 Widely used WordPress plugin for building contact forms | 15.8M sites |
| Mailcheck JavaScript utility suggesting corrections for mistyped email addresses | 1.2M sites |
| Business Email & Productivity | |
| Microsoft 365 Microsoft suite for business email, office apps, and collaboration | 18.2M sites |
| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 131.7M sites |
| Really Simple SSL & Security WordPress plugin enforcing HTTPS and hardening site security | 6.4M sites |
| Privacy & Cookie Consent | |
| Cookie Notice WordPress plugin displaying a cookie consent notice | 1.2M sites |
| Web Servers & Operating Systems | |
| Nginx High-performance web server and reverse proxy widely deployed | 153.2M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 114.2M sites |
| Front-End Frameworks & UI Toolkits | |
| Bootstrap Popular CSS and component framework for responsive layouts | 43.5M sites |
| JavaScript Libraries & Widgets | |
| Popper JavaScript positioning engine for tooltips and popovers | 5.4M sites |
| jQuery Widely used JavaScript library simplifying DOM manipulation, events, and AJAX | 114.7M sites |
| parallax.js JavaScript library creating parallax scrolling background effects | 5.9M sites |
| punycode JavaScript utility encoding internationalized domain names | 1.3M sites |
| Databases & Caching | |
| MySQL Popular open-source relational database used by many web applications | 77.9M sites |
| SEO & Content Discovery | |
| Open Graph Metadata protocol controlling how page links preview on social platforms | 151.8M sites |
| Yoast SEO WordPress plugin managing on-page SEO, sitemaps, and metadata | 21.4M sites |
| Fonts & Icons | |
| Font Awesome Popular icon library and toolkit for scalable web icons | 71.2M sites |
| MyFonts Online marketplace for licensing and delivering web and desktop fonts. | 24.7K sites |
| other | |
| Albacross B2B visitor identification and lead generation tool | 18.1K sites |
| Valueit-As | 59 sites |
| Yoast | 9.2M sites |
| Contact Form 7 Forms & Popups | 7.3M sites |
| Wpforms | 2.2M sites |
| Monsterinsights | 1.4M sites |
| Two Factor Security & Privacy | 644.8K sites |
| Compliance by Hu-manity.co Security & Privacy | 315.6K sites |
| Wpo365 | 9.5K sites |
| Agentic Optimization – SEO for AI Agents Productivity & Operations | 21 sites |
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