| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| Email & Push Marketing | |
| Mailchimp Email marketing platform for campaigns and audience management | 4.2M sites |
| Business Email & Productivity | |
| Microsoft 365 Microsoft suite for business email, office apps, and collaboration | 18.2M sites |
| Business & Collaboration Apps | |
| Atlassian Generic Atlassian software integration detected on the site | 215.6K sites |
| Communications | |
| SendGrid Cloud email delivery service for transactional and marketing mail | 3.8M sites |
| CDN & Edge Delivery | |
| Cloudflare Global CDN and edge platform delivering and protecting websites | 161.4M sites |
| Security & Bot Defense | |
| Apple Generic Apple service or integration detected on the site | 519.6K sites |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 131.7M sites |
| Web Servers & Operating Systems | |
| HTTP/3 Modern web transport protocol over QUIC for faster connections | 149.4M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 114.2M sites |
| JavaScript Libraries & Widgets | |
| 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 |
| Performance & Optimization | |
| Priority Hints Browser resource hints signaling fetch priority for faster loading | 74.5M 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 |
| other | |
| Anthropic Developer of the Claude AI models and the API behind them. Sites listed here have verified their domain with Anthropic | 160.5K sites |
| KnowBe4 Security awareness training and phishing simulation platform | 168.1K sites |
| Wordfence Security – Firewall, Malware Scan, and Login Security Security & Privacy | 4M sites |
| Wordfence Login Security Security & Privacy | 2.4M sites |
| Objectcache | 796.6K sites |
| Two Factor Security & Privacy | 644.8K sites |
| Wpaas | 527.4K sites |
| Wp Site Designer | 527.3K sites |
| FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, Mailgun, Postmark, Cloudflare, toSend, Gmail and Any SMTP Other | 468.2K sites |
| Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder Forms & Popups | 428.3K sites |
| Gdl | 342.5K sites |
| HealthBeam – Advanced WordPress Diagnostics, Monitoring & Site Health Tools Other | 3 sites |
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