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Instagram

Instagram is an online photo-sharing and social networking service that lets users take pictures, apply filters to them and share those pictures in several ways, including through social networks such as Twitter and Facebook. Instagram is available as an application for iPhone, iPad and Android devices. Instagram is part of Facebook.

Spotify

Spotify is an online music streaming service. Spotify uses a freemium model, offering a basic service free of charge while enticing customers to upgrade to a paid subscription plan that includes mobile applications and advertising free stream. Spotify is available for multiple platforms including Windows, OS X and Linux as well as iPhone, iPad, Android, Blackberry and Windows Phone.

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Amazon

Amazon is an online store which sells both physical as well as digital goods. Amazon also develops the Kindle, which is available as an e-book reader as well as a tablet computer. Amazon Web Services is a provider of cloud computing services.