| CMS & Website Builders | |
| Joomla Open-source content management system for building websites | 1.2M sites |
| Web Analytics & Measurement | |
| Google Analytics Google platform measuring website traffic and visitor behavior | 48.2M sites |
| Marketing & Email Campaigns | |
| Mautic Open-source marketing automation platform for email campaigns and lead nurturing. | 29.7K sites |
| Customer Chat & Support | |
| Tawk.to Free live chat widget for customer messaging on websites. | 121.7K sites |
| Communications | |
| Elastic Email Email delivery service for marketing and transactional mail | 175.3K sites |
| Security & Bot Defense | |
| reCAPTCHA Google service distinguishing humans from bots to block spam | 12.9M sites |
| Web Servers & Operating Systems | |
| Apache HTTP Server Long-established open-source web server software | 67.2M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 89.1M sites |
| Front-End Frameworks & UI Toolkits | |
| Bootstrap Popular CSS and component framework for responsive layouts | 36.7M sites |
| UIKit Lightweight modular front-end framework for web interfaces | 1M sites |
| JavaScript Libraries & Widgets | |
| MooTools Compact JavaScript framework for object-oriented development | 423.2K sites |
| jQuery Widely used JavaScript library simplifying DOM manipulation, events, and AJAX | 90.4M sites |
| jQuery Migrate Compatibility shim restoring deprecated jQuery APIs for older code | 39.3M sites |
| scrollreveal JavaScript library revealing elements with animations on scroll | 355.1K sites |
| SEO & Content Discovery | |
| Open Graph Metadata protocol controlling how page links preview on social platforms | 122.9M sites |
| RSS Web feed format syndicating site content for readers and aggregators | 53.2M sites |
| Fonts & Icons | |
| Font Awesome Popular icon library and toolkit for scalable web icons | 56.1M sites |
| Google Font API Google service delivering free web fonts to websites | 87.6M sites |
| other | |
| Supreme-Servers | 130 sites |
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