Apache is a free and open-source cross-platform web server software.
Gatsby is a React-based open-source framework with performance, scalability and security built-in.
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
Open Graph is a protocol that is used to integrate any web page into the social graph.
React is an open-source JavaScript library for building user interfaces or UI components.