| CMS & Website Builders | |
| ThimPress LearnPress WordPress LMS plugin for creating online courses. | 84.7K sites |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| WordPress.com Hosted WordPress publishing and website platform. | 5.3M sites |
| WordPress Themes & Plugins | |
| Gutenberg Block-based content editor project for WordPress | 2.4M sites |
| Jetpack Automattic plugin adding security, performance, and site tools to WordPress | 2.7M sites |
| Otter Blocks Gutenberg blocks and page building plugin for WordPress. | 159.6K sites |
| WordPress Block Editor Block-based content editor built into modern WordPress | 15.7M sites |
| WordPress Site Editor Full-site editing interface built into modern WordPress | 5.1M 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 | |
| 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 |
| Databases & Caching | |
| MySQL Popular open-source relational database used by many web applications | 77.9M 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 |
| Jetpack – WP Security, Backup, Speed, & Growth Security & Privacy | 5.1M sites |
| Akismet Anti-spam: Spam Protection Social & Community | 4M sites |
| Mcp | 3.1M sites |
| Wpcom | 2.2M sites |
| My Jetpack | 2.1M sites |
| Jetpack Boost – Website Speed, Performance and Critical CSS Performance & Speed | 2.1M sites |
| Videopress | 329.4K sites |
| Newspack Blocks | 310.5K sites |
| Jetpack Global Styles | 309.4K sites |
| Wpcomsh | 308.5K sites |
| Help Center | 308.5K sites |
| Wp Sync | 296.9K sites |
| Crowdsignal Forms Design & Themes | 206.3K sites |
| Otter | 178.8K sites |
| Mwai Ui | 64.5K sites |
| Mwai | 63.9K sites |
| Meow Licenser | 44K sites |
| Block Visibility — Conditional Visibility Control for the Block Editor Other | 41.3K sites |
| Getwid – Gutenberg Blocks Design & Themes | 35.8K sites |
| LearnPress – WordPress LMS Plugin for Create and Sell Online Courses Other | 30.7K sites |
| Cr | 94 sites |
| Upcoming for Calendly Other | 50 sites |
| Meeting Assistant | 1 sites |
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