| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| Web Analytics & Measurement | |
| Google Tag Manager Tag management system deploying analytics and marketing tags without code | 63.8M sites |
| Hosting & Cloud Providers | |
| UpCloud Cloud server hosting provider. | 119.2K sites |
| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 131.7M sites |
| Web Servers & Operating Systems | |
| Nginx High-performance web server and reverse proxy widely deployed | 153.2M 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 |
| Media, Maps & Social | |
| Polylang WordPress plugin for building multilingual and translated sites | 464.8K sites |
| SEO & Content Discovery | |
| Open Graph Metadata protocol controlling how page links preview on social platforms | 151.8M sites |
| RSS Web feed format syndicating site content for readers and aggregators | 71.1M sites |
| Yoast | 9.2M sites |
| Redirection SEO | 2.6M sites |
| Yoast Duplicate Post Other | 1.8M sites |
| Ithemes Security | 754.7K sites |
| Pll | 571.9K sites |
| Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App Marketing & Email | 306.5K sites |
| Psd | 287.7K sites |
| Mapsvg | 8.9K sites |
| YOP Poll Other | 6.2K sites |
| Block Catalog Design & Themes | 181 sites |
| Webikon Maintenance | 87 sites |
| Webikon Probe | 49 sites |
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