Apache is a free and open-source cross-platform web server software.
Disqus is a worldwide blog comment hosting service for web sites and online communities that use a networked platform.
Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
SoundCloud widget gives you the ability to upload, manage and share tracks.
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture and a template system.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.