Apache is a free and open-source cross-platform web server software.
AWeber is an email marketing service.
cdnjs is a free distributed JS library delivery service.
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.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.
Redux Framework is a modular PHP library that allows developers to create customisable settings panels and controls for WordPress projects, providing a consistent user interface for managing options and settings.
Unix is a family of multitasking, multiuser computer operating systems.
WPBakery is a drag and drop visual page builder plugin for WordPress.