Apache is a free and open-source cross-platform web server software.
cdnjs is a free distributed JS library delivery service.
GoatCounter is an open source web analytics platform available as a hosted service (free for non-commercial use) or self-hosted app. It aims to offer easy to use and meaningful privacy-friendly web analytics as an alternative to Google Analytics or Matomo.
JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.
KaTeX is a cross-browser JavaScript library that displays mathematical notation in web browsers.
LottieFiles is an open-source animation file format that's tiny, high quality, interactive, and can be manipulated at runtime.
PHP is a general-purpose scripting language used for web development.
Typekit is an online service which offers a subscription library of fonts.
Unpkg is a content delivery network for everything on npm.