2. Skype is a telecommunications application software product that specializes in providing video chat and voice calls from computers,
tablets, and mobile devices via the Internet to other devices or telephones/smartphones . Users can also send instant
messages, exchange files and images, send video messages, and create conference calls. Skype is available to download onto computers
running Microsoft Windows, Mac, or Linux, as well as Android, Blackberry, iOS, and Windows Phone smartphones and tablets.
Much of the service is free, but users require Skype Credit or a subscription to call landline or mobile numbers. Skype is based on
a freemium model.
3. Google+ (pronounced and sometimes written as Google Plus is a social
network and social layer for google service that is owned and operated by Google Inc.
Google+ launched in June 2011 as a social network. Google executives subsequently
described Google+ as "a social layer across all of Google's services", allowing them to share
a user's identity and interests.
The service, Google's fourth foray into social networking, experienced strong growth in its initial years, although usage statistics have
varied, depending on how the service is defined. User engagement has been relatively low. Three Google executives have overseen the
product.
4. YouTube is a video-sharing website headquartered in San Bruno, California, United States. The service was
created by three former PayPal employees in February 2005. In November 2006, it was bought by Google
for US$1.65 billion.[4] YouTube now operates as one of Google's subsidiaries.[5] The site allows users to
upload, view, and share videos, and it makes use of WebM,H.264, and Adobe Flash Video technology to
display a wide variety of user-generated and corporate media video. Available content includes video clips, TV
clips, music videos, and other content such as video blogging, short original videos, and educational videos
5. Twitter is an online social networking service that enables users to
send and read short 140-character messages called "tweets".
Registered users can read and post tweets, but unregistered users can
only read them. Users access Twitter through the website
interface, SMS, or mobile device app.[10] Twitter Inc. is based in San
Francisco and has more than 25 offices around the world.[11]
Twitter was created in March 2006 by Jack Dorsey, Evan
Williams, Biz Stone and Noah Glass and launched by July 2006. The service rapidly gained worldwide popularity,
with more than 100
million users who in 2012 posted 340 million tweets per day.[12] The
service also handled 1.6 billion search queries per day.[13][14][15] In 2013
Twitter was one of the ten most-visited websites, and has been
described as "the SMS of the Internet."[16][17] As of May 2015, Twitter
has more than 500 million users, out of which more than302 million
are active users .
6. Gmail is a free, advertising-supported email service provided by Google.[5] Users may access Gmail
as secure webmail,[6] as well as via POP3 or IMAP4 protocols.[7][8] Gmail initially started as an invitation-
only beta release on April 1, 2004[9] and it became available to the general public on February 7, 2007, though
still in beta status at that time.[10] The service was upgraded from beta status on July 7, 2009, along with the rest
of the Google Apps suite.
