Apache is a free and open-source cross-platform web server software.
cdnjs is a free distributed JS library delivery service.
Datadog is a SaaS-based monitoring and analytics platform for large-scale applications and infrastructure.
Imgix is a visual media platform for managing, processing, rendering, optimising and delivering your existing images.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Zendesk is a cloud-based help desk management solution offering customizable tools to build customer service portal, knowledge base and online communities.