Amazon S3 or Amazon Simple Storage Service is a service offered by Amazon Web Services (AWS) that provides object storage through a web service interface.
Apache is a free and open-source cross-platform web server software.
cdnjs is a free distributed JS library delivery service.
Mailchimp is a marketing automation platform and email marketing service.
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.
SoundCloud widget gives you the ability to upload, manage and share tracks.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.