Apache is a free and open-source cross-platform web server software.
cdnjs is a free distributed JS library delivery service.
Polyfill is a service which accepts a request for a set of browser features and returns only the polyfills that are needed by the requesting browser.
Stripe offers online payment processing for internet businesses as well as fraud prevention, invoicing and subscription management.
Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.