cdnjs is a free distributed JS library delivery service.
HubSpot is a marketing and sales software that helps companies attract visitors, convert leads, and close customers.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
RackCache is a quick drop-in component to enable HTTP caching for Rack-based applications.
Ruby on Rails is a server-side web application framework written in Ruby under the MIT License.