| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 57.6M sites |
| Web Analytics & Measurement | |
| Google Tag Manager Tag management system deploying analytics and marketing tags without code | 53M sites |
| Advertising & Conversion Tracking | |
| DoubleClick Floodlight Google tag tracking conversions from advertising campaigns | 3.3M sites |
| Facebook Pixel Meta tracking pixel measuring ad conversions and building audiences | 8.3M sites |
| Linkedin Insight Tag LinkedIn tag tracking ad conversions and building audiences | 4.6M sites |
| Sales & CRM | |
| HubSpot Marketing, CRM, and automation platform for businesses | 1.5M sites |
| Forms & Lead Capture | |
| Contact Form 7 Widely used WordPress plugin for building contact forms | 11.7M sites |
| Hosting & Cloud Providers | |
| Ignum-As Czech Republic Czech web hosting and domain provider. | 199.2K sites |
| CDN & Edge Delivery | |
| Unpkg CDN serving packages published to the npm registry | 4.4M sites |
| jsDelivr Free open-source CDN for JavaScript, CSS, and assets | 17M sites |
| Security & Bot Defense | |
| reCAPTCHA Google service distinguishing humans from bots to block spam | 13.1M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 91.4M sites |
| Front-End Frameworks & UI Toolkits | |
| Bootstrap Popular CSS and component framework for responsive layouts | 37.9M sites |
| JavaScript Libraries & Widgets | |
| Htmx Library enabling AJAX and dynamic interactions using HTML attributes. | 53.6K sites |
| jQuery Widely used JavaScript library simplifying DOM manipulation, events, and AJAX | 92.3M sites |
| jQuery Migrate Compatibility shim restoring deprecated jQuery APIs for older code | 39.8M sites |
| Databases & Caching | |
| MySQL Popular open-source relational database used by many web applications | 59.5M sites |
| other | |
| SmartEmailing Czech email marketing and automation service | 2.2K sites |
| Varify A/B testing and website personalization tool | 7.1K sites |
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