Spin JS
456,729 websites

Spin JS is free to use

http://spin.js.org/

Spin.js dynamically creates spinning activity indicators that can be used as resolution-independent replacement for AJAX loading GIFs.

VS

TrackJS
397,405 websites

TrackJS offers both free and paid options

https://trackjs.com/

JavaScript error detection app for detecting JS errors on customer visits.

Market Share by Top Websites

1 Spin JS is leading in The Entire Web.

2 TrackJS is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.

Websites Categories

1 TrackJS has better usage coverage in more websites categories. Including Computers Electronics & Technology, Lifestyle, Business & Consumer Services, E-commerce & Shopping and 10 other categories.

2 Spin JS is leading in Science & Education, Arts & Entertainment, Travel & Tourism, Community & Society and 6 other categories.

Geography

1 Spin JS is leading in most countries, including Germany, Italy, Taiwan, Poland and 84 other countries.

2 TrackJS is leading in United States, China, Russia, United Kingdom and 71 other countries.