| CMS & Website Builders | |
| 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 |
| Redux Framework Options framework used by WordPress themes and plugins | 1.7M sites |
| Forms & Lead Capture | |
| Contact Form 7 Widely used WordPress plugin for building contact forms | 15.8M sites |
| Business Email & Productivity | |
| Titan Business email hosting built for professionals and domains | 875.4K 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 | |
| Backbone.js JavaScript framework structuring apps with models and views | 742.2K sites |
| Modernizr JavaScript library detecting browser feature support | 7.5M 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 |
| 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 |
| SEO & Content Discovery | |
| All in One SEO WordPress plugin managing SEO settings, sitemaps, and metadata | 4.7M sites |
| All in One SEO Pack WordPress plugin managing SEO settings, sitemaps, and metadata | 4.2M sites |
| 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 |
| Fonts & Icons | |
| Font Awesome Popular icon library and toolkit for scalable web icons | 71.2M sites |
| Google Font API Google service delivering free web fonts to websites | 105.7M sites |
| other | |
| Titan Email Hosted business email service tied to domain registrars | 954.5K sites |
| Contact Form 7 Forms & Popups | 7.3M sites |
| Jetpack – WP Security, Backup, Speed, & Growth Security & Privacy | 5.1M sites |
| Akismet Anti-spam: Spam Protection Social & Community | 4M sites |
| Wpforms | 2.2M sites |
| Wpcom | 2.2M sites |
| My Jetpack | 2.1M sites |
| Jetpack Boost – Website Speed, Performance and Critical CSS Performance & Speed | 2.1M sites |
| Aioseo | 1.5M sites |
| Monsterinsights | 1.4M sites |
| Mc4wp | 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 |
| Podcast Importer SecondLine Content & Media | 3.4K sites |
| Podcasts Other | 40 sites |
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