| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| WordPress Themes & Plugins | |
| Twenty Nineteen Default WordPress theme from 2019. | 123.2K sites |
| Business Email & Productivity | |
| SpamExperts Email spam filtering and inbound mail security. | 563K sites |
| Hosting & Cloud Providers | |
| Oniaas Network operator and autonomous system for internet infrastructure. | 138.4K 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 | |
| Moment Timezone JavaScript library adding time zone support to Moment date handling. | 160.2K sites |
| Moment.js JavaScript library for parsing and formatting dates | 2.7M sites |
| 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 |
| SEO & Content Discovery | |
| RSS Web feed format syndicating site content for readers and aggregators | 71.1M sites |
| Fonts & Icons | |
| Font Awesome Popular icon library and toolkit for scalable web icons | 71.2M sites |
| Showpass WordPress Extension Productivity & Operations | 419 sites |
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