Apache is a free and open-source cross-platform web server software.
D3 based reusable chart library
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.
Next.js is a React framework for developing single page Javascript applications.
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.