| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 58.6M sites |
| WordPress Themes & Plugins | |
| Kadence WP Kadence Fast, flexible multipurpose WordPress theme | 689.7K sites |
| Hosting & Cloud Providers | |
| Hoasted Dutch managed hosting provider. | 59.7K sites |
| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 129.2M sites |
| Web Servers & Operating Systems | |
| HTTP/3 Modern web transport protocol over QUIC for faster connections | 157.2M sites |
| LiteSpeed High-performance web server known for speed and caching | 35.8M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 93.5M sites |
| JavaScript Libraries & Widgets | |
| jQuery Widely used JavaScript library simplifying DOM manipulation, events, and AJAX | 93.8M sites |
| jQuery Migrate Compatibility shim restoring deprecated jQuery APIs for older code | 40.4M sites |
| Databases & Caching | |
| MySQL Popular open-source relational database used by many web applications | 60.6M sites |
| Performance & Optimization | |
| Priority Hints Browser resource hints signaling fetch priority for faster loading | 65.2M sites |
| SEO & Content Discovery | |
| Open Graph Metadata protocol controlling how page links preview on social platforms | 133.1M sites |
| RSS Web feed format syndicating site content for readers and aggregators | 55.3M sites |
| Omgf | 362.9K sites |
| Ut | 73 sites |
| UltimaTour Contact Forms Marketing & Email | 49 sites |
| Ultimaseo | 2 sites |
| Ultimatour | 2 sites |
| Ultimatour Review Display | 2 sites |
| Ultimatour Smart Commerce | 2 sites |
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