| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| Security & Bot Defense | |
| Really Simple SSL & Security WordPress plugin enforcing HTTPS and hardening site security | 6.4M 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 |
| Databases & Caching | |
| MySQL Popular open-source relational database used by many web applications | 77.9M sites |
| other | |
| ACME/Let's Encrypt Free TLS certificates issued automatically over the ACME protocol | 11.7M sites |
| Kvcnet-2009 Hosting and network operator | 2.9K sites |
| Contact Form 7 Forms & Popups | 7.3M sites |
| Wordfence Security – Firewall, Malware Scan, and Login Security Security & Privacy | 4M sites |
| Mc4wp | 1M sites |
| Sowb | 297.7K sites |
| Cf7apps | 277.6K sites |
| Wpgmza | 225.6K sites |
| Ngg | 210.2K sites |
| WP Rollback – Rollback Plugins and Themes Other | 204.4K sites |
| Imagely | 160.3K sites |
| Popups – WordPress Popup Forms & Popups | 5 sites |
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