Apache is a free and open-source cross-platform web server software.
Cloudimage automates the transformation and optimisation of images on the fly and accelerates their distribution via the Content Delivery Network (CDN).
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Leaflet is the open-source JavaScript library for mobile-friendly interactive maps.
Open Graph is a protocol that is used to integrate any web page into the social graph.
OpenStreetMap is a free, editable map of the whole world that is being built by volunteers largely from scratch and released with an open-content license.
Unpkg is a content delivery network for everything on npm.