| Advertising & Conversion Tracking | |
| DoubleClick Ad Exchange (AdX) Google programmatic advertising exchange serving display ads | 188.8K sites |
| Google AdSense Google program displaying ads and monetizing site content | 4M sites |
| Hosting & Cloud Providers | |
| Ignum-As Czech Republic Czech web hosting and domain provider. | 199.2K sites |
| Web Servers & Operating Systems | |
| Nginx High-performance web server and reverse proxy widely deployed | 141.9M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 91.4M sites |
| JavaScript Libraries & Widgets | |
| Lightbox JavaScript script displaying images in an overlay popup | 5.9M sites |
| Prototype JavaScript framework easing DOM and AJAX development | 873.9K sites |
| script.aculo.us JavaScript library adding visual effects and UI controls | 131.3K sites |
| other | |
| Bluefish Open source code editor aimed at web developers | 7.8K sites |
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