| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 56.5M sites |
| WordPress Themes & Plugins | |
| Scissor Themes Writee WordPress blogging theme from Scissor Themes | 6.3K sites |
| Hosting & Cloud Providers | |
| IONOS Web hosting and domain provider offering managed plans | 13M 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 |
| JavaScript Libraries & Widgets | |
| FitVids.JS JavaScript utility making embedded videos responsive | 3.8M sites |
| Modernizr JavaScript library detecting browser feature support | 5.8M sites |
| Slick Responsive carousel and slider library for web pages | 7.4M 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 |
| Databases & Caching | |
| MySQL Popular open-source relational database used by many web applications | 58.4M sites |
| Performance & Optimization | |
| Priority Hints Browser resource hints signaling fetch priority for faster loading | 59.8M sites |
| SEO & Content Discovery | |
| 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 |
| Akismet Anti-spam: Spam Protection Social & Community | 5.9M sites |
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