| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| WordPress Themes & Plugins | |
| Divi Popular WordPress theme and visual page builder | 3.9M sites |
| Web Servers & Operating Systems | |
| Apache HTTP Server Long-established open-source web server software | 79.2M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 114.2M sites |
| JavaScript Libraries & Widgets | |
| jQuery Widely used JavaScript library simplifying DOM manipulation, events, and AJAX | 114.7M sites |
| jQuery Migrate Compatibility shim restoring deprecated jQuery APIs for older code | 53M sites |
| Databases & Caching | |
| MySQL Popular open-source relational database used by many web applications | 77.9M sites |
| Performance & Optimization | |
| Priority Hints Browser resource hints signaling fetch priority for faster loading | 74.5M sites |
| SEO & Content Discovery | |
| RSS Web feed format syndicating site content for readers and aggregators | 71.1M sites |
| Fonts & Icons | |
| Google Font API Google service delivering free web fonts to websites | 105.7M sites |
| other | |
| ACME/Let's Encrypt Free TLS certificates issued automatically over the ACME protocol | 11.7M sites |
| Helloly | 11.9K sites |
| Akismet Anti-spam: Spam Protection Social & Community | 4M sites |
| Divi | 1.8M sites |
| SiteSEO – SEO Simplified SEO | 11.1K sites |
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