Apache is a free and open-source cross-platform web server software.
cdnjs is a free distributed JS library delivery service.
Next.js is a React framework for developing single page Javascript applications.
Open Graph is a protocol that is used to integrate any web page into the social graph.
OpenSSL is a software library for applications that secure communications over computer networks against eavesdropping or need to identify the party at the other end.
Typekit is an online service which offers a subscription library of fonts.
Unix is a family of multitasking, multiuser computer operating systems.