Ryan Kirkman and Thomas Davis developed CDNJS, a project aimed at making JavaScript resources load as fast as possible. They initially hosted it on Amazon's CloudFront CDN but switched to CloudFlare due to increasing costs. Today, CDNJS is the fastest Javascript repository on the internet. The benefits of using a CDN for JavaScript include faster loading times and browser caching. Google and Microsoft also have public repositories for popular JavaScript resources, but they are limited in scope and slow to update. CDNJS offers a wide range of web's JavaScript resources, with the latest versions available for free. It is now expanding beyond just JavaScript by adding CSS and images for popular packages like Bootstrap.