| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 77.2M sites |
| WordPress Themes & Plugins | |
| Twenty Twenty-One Default WordPress theme released with the 2021 version | 327.6K sites |
| WordPress Block Editor Block-based content editor built into modern WordPress | 16M sites |
| Forms & Lead Capture | |
| Contact Form 7 Widely used WordPress plugin for building contact forms | 16M sites |
| Security & Bot Defense | |
| reCAPTCHA Google service distinguishing humans from bots to block spam | 16.3M sites |
| Web Servers & Operating Systems | |
| LiteSpeed High-performance web server known for speed and caching | 42M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 117.2M sites |
| JavaScript Libraries & Widgets | |
| Highlight.js JavaScript library for syntax highlighting code blocks on pages. | 283.1K sites |
| Lightbox JavaScript script displaying images in an overlay popup | 7.7M sites |
| jQuery Widely used JavaScript library simplifying DOM manipulation, events, and AJAX | 117.3M sites |
| jQuery Migrate Compatibility shim restoring deprecated jQuery APIs for older code | 53.9M sites |
| Databases & Caching | |
| MySQL Popular open-source relational database used by many web applications | 79.4M sites |
| Performance & Optimization | |
| Priority Hints Browser resource hints signaling fetch priority for faster loading | 77.7M sites |
| Media, Maps & Social | |
| YouTube Video hosting platform whose players embed into web pages | 8.1M sites |
| SEO & Content Discovery | |
| RSS Web feed format syndicating site content for readers and aggregators | 72.4M sites |
| Fonts & Icons | |
| Font Awesome Popular icon library and toolkit for scalable web icons | 73M sites |
| Google Font API Google service delivering free web fonts to websites | 110M sites |
| other | |
| Tizoo | 5.8K sites |
| Contact Form 7 Forms & Popups | 7.3M sites |
| Wordfence Security – Firewall, Malware Scan, and Login Security Security & Privacy | 4M sites |
| Redirection SEO | 2.6M sites |
| Wordfence Login Security Security & Privacy | 2.4M sites |
| Hub Connector | 1.2M sites |
| Wpmudev_pcs | 878.7K sites |
| Wpmudev_blc | 374K sites |
| Twentig Supercharged Block Editor – Blocks, Patterns, Starter Sites, Portfolio Design & Themes | 19K sites |
| Link Library Content & Media | 7.7K sites |
| Editor Custom Color Palette Other | 131 sites |
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