Apache is a free and open-source cross-platform web server software.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Google Hosted Libraries is a stable, reliable, high-speed, globally available content distribution network for the most popular, open-source JavaScript libraries.
Prototype is a JavaScript Framework that aims to ease development of web applications.
React is an open-source JavaScript library for building user interfaces or UI components.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.