| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| Forms & Lead Capture | |
| Contact Form 7 Widely used WordPress plugin for building contact forms | 15.8M sites |
| Hosting & Cloud Providers | |
| Plesk Web hosting control panel for managing servers and sites | 6.6M sites |
| Seeweb Web Hosting, Colocation And Cloud Services Italian provider of cloud hosting, colocation, and datacenter services. | 111.6K sites |
| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 131.7M sites |
| Web Servers & Operating Systems | |
| Apache HTTP Server Long-established open-source web server software | 79.2M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 114.2M sites |
| Front-End Frameworks & UI Toolkits | |
| Bootstrap Popular CSS and component framework for responsive layouts | 43.5M sites |
| JavaScript Libraries & Widgets | |
| FitVids.JS JavaScript utility making embedded videos responsive | 5M sites |
| Modernizr JavaScript library detecting browser feature support | 7.5M sites |
| Smart Slider 3 WordPress plugin building responsive sliders and galleries | 689K 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 |
| Media, Maps & Social | |
| Photo Gallery WordPress plugin creating image galleries and albums | 299.5K sites |
| SEO & Content Discovery | |
| Google Generic Google service or script detected on the site | 32.3M sites |
| RSS Web feed format syndicating site content for readers and aggregators | 71.1M sites |
| other | |
| ACME/Let's Encrypt Free TLS certificates issued automatically over the ACME protocol | 11.7M sites |
| Contact Form 7 Forms & Popups | 7.3M sites |
| Redirection SEO | 2.6M sites |
| Wp Toolkit | 595.4K sites |
| Quadlayers | 272.2K sites |
| Omgf | 248.7K sites |
| String locator Productivity & Operations | 106.5K sites |
| CMB2 Forms & Popups | 9.2K sites |
| Interlinks Manager Pro | 3.5K sites |
| Interlinks Manager – Internal Links Optimizer SEO | 695 sites |
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