Est. employees
201 to 500
| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 77.6M sites |
| Web Analytics & Measurement | |
| Google Tag Manager Tag management system deploying analytics and marketing tags without code | 65.9M sites |
| Google Tag Manager for WordPress WordPress plugin integrating Google Tag Manager into sites | 607.1K sites |
| Quantcast Measure Audience measurement and analytics service | 437.9K sites |
| Forms & Lead Capture | |
| Conditional Fields for Contact Form 7 WordPress add-on adding conditional logic to Contact Form 7 | 297.9K sites |
| Contact Form 7 Widely used WordPress plugin for building contact forms | 16M sites |
| Business Email & Productivity | |
| Microsoft 365 Microsoft suite for business email, office apps, and collaboration | 18.8M sites |
| Hosting & Cloud Providers | |
| Alibaba Cloud Cloud computing and hosting platform from Alibaba | 4.4M sites |
| Security & Bot Defense | |
| GlobalSign Certificate authority issuing SSL/TLS and identity certificates | 622K sites |
| hCaptcha CAPTCHA service blocking bots while preserving privacy | 1.1M sites |
| Web Servers & Operating Systems | |
| Nginx High-performance web server and reverse proxy widely deployed | 162.6M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 118.1M sites |
| JavaScript Libraries & Widgets | |
| Modernizr JavaScript library detecting browser feature support | 7.6M sites |
| jQuery Widely used JavaScript library simplifying DOM manipulation, events, and AJAX | 118.1M sites |
| jQuery Migrate Compatibility shim restoring deprecated jQuery APIs for older code | 54.1M sites |
| Databases & Caching | |
| MySQL Popular open-source relational database used by many web applications | 79.9M sites |
| SEO & Content Discovery | |
| Google Generic Google service or script detected on the site | 34.3M sites |
| Open Graph Metadata protocol controlling how page links preview on social platforms | 160.2M sites |
| RSS Web feed format syndicating site content for readers and aggregators | 72.9M sites |
| Contact Form 7 Forms & Popups | 14.1M sites |
| Wordfence Security – Firewall, Malware Scan, and Login Security Security & Privacy | 7.8M sites |
| Wordfence Login Security Security & Privacy | 5.6M sites |
| Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App Marketing & Email | 576.3K sites |
| Pods – Custom Content Types and Fields Other | 157.3K sites |
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