| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 57.6M sites |
| Web Analytics & Measurement | |
| Google Analytics Google platform measuring website traffic and visitor behavior | 49M sites |
| Web Servers & Operating Systems | |
| Apache HTTP Server Long-established open-source web server software | 70.4M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 91.4M sites |
| Front-End Frameworks & UI Toolkits | |
| Bootstrap Popular CSS and component framework for responsive layouts | 37.9M sites |
| PWA Progressive web app technology enabling installable, offline-capable sites | 27.9M sites |
| JavaScript Libraries & Widgets | |
| Slick Responsive carousel and slider library for web pages | 7.5M sites |
| WOW JavaScript library revealing CSS animations on scroll | 4.1M sites |
| jQuery Widely used JavaScript library simplifying DOM manipulation, events, and AJAX | 92.3M sites |
| jQuery Migrate Compatibility shim restoring deprecated jQuery APIs for older code | 39.8M sites |
| Databases & Caching | |
| MySQL Popular open-source relational database used by many web applications | 59.5M sites |
| SEO & Content Discovery | |
| RSS Web feed format syndicating site content for readers and aggregators | 54.2M sites |
| Akismet Anti-spam: Spam Protection Social & Community | 5.8M sites |
| Redirection SEO | 3.6M sites |
| tribe Other | 739.4K sites |
| Tec | 619.7K sites |
| Simple History – Track, Log, and Audit WordPress Changes Other | 422.3K sites |
| Seopress | 397.1K sites |
| Gwiz | 92.3K sites |
| Formation Forms – Contact Form, 200 Form Designs, Powerful Builder Forms & Popups | 35 sites |
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