Skype is a multi-channel communications software that provides video chat, voice calls, instant messaging & more to business of all sizes, across the world.
Tripadvisor is an online travel agency that assists customers in gathering travel information with user-generated content like posting reviews, opinions of travel-related content and engaging in interactive travel forums. It also offers online hotel reservations and bookings for transportation, lodging, travel experiences, and restaurants
YouTube is a video sharing service where users can watch, like, share, comment and upload their own videos. The video service can be accessed on PCs, laptops, tablets and via mobile phones.