| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| WordPress Themes & Plugins | |
| WordPress Block Editor Block-based content editor built into modern WordPress | 15.7M sites |
| Hosting & Cloud Providers | |
| Hpls-As | 3K sites |
| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 131.7M sites |
| hCaptcha CAPTCHA service blocking bots while preserving privacy | 1M sites |
| Web Servers & Operating Systems | |
| Nginx High-performance web server and reverse proxy widely deployed | 153.2M sites |
| OpenResty Nginx-based web platform bundling Lua scripting support | 28.2M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 114.2M sites |
| JavaScript Libraries & Widgets | |
| Moment.js JavaScript library for parsing and formatting dates | 2.7M sites |
| Select2 JavaScript library enhancing select boxes with search and tags | 1.8M sites |
| Underscore.js JavaScript utility library offering functional programming helpers | 6.3M 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 |
| pickadate.js Lightweight JavaScript date and time picker | 278.8K 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 |
| W3 Total Cache WordPress caching plugin improving site speed and performance | 1.3M sites |
| SEO & Content Discovery | |
| RSS Web feed format syndicating site content for readers and aggregators | 71.1M sites |
| Wordfence Security – Firewall, Malware Scan, and Login Security Security & Privacy | 4M sites |
| Wordfence Login Security Security & Privacy | 2.4M sites |
| Hub Connector | 1.2M sites |
| Wp Smush | 1.1M sites |
| Pll | 571.9K sites |
| Simple History – Track, Log, and Audit WordPress Changes Other | 292.2K sites |
| Otter | 178.8K sites |
| Wp Umbrella | 86K sites |
| CommonsBooking Productivity & Operations | 21 sites |
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