Wednesday 5 February 2014

social network - Twitter

Type Public
Traded as NYSETWTR
Foundation date March 21, 2006[1]
Headquarters San Francisco, California, United States[2]
Area served Worldwide
Founder(s) Jack Dorsey, Noah Glass,
Evan Williams, Biz Stone
Key people Jack Dorsey (Chairman)
Dick Costolo (CEO)
Industry Internet
Revenue Increase US$317 million (2012)[3]
Employees 2,000+ (2013)[4]
Subsidiaries Vine
Website twitter.com
Written in JavaScript,[5] Ruby,[5] Scala,[5] Java[5][6]
Alexa rank negative increase 11 (February 2014)[7]
Type of site Social network service, microblogging
Registration Required to post, follow, or be followed
Users 200 million (active February 2013)[8]
Available in Multilingual
Launched July 15, 2006[9]
Current status        active 
 

to signup/login Twitter

social network- Orkut



Commercial? Yes
Type of site Social network service
Registration Required
Available language(s) 48 languages
Users 33 million[1]
Owner Google Inc.
Created by Orkut Büyükkökten
Launched 24 January 2004; 10 years ago
Alexa rank negative increase 2,870 (February 2014)[2] 


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social network - Facebook

Type Public
Traded as NASDAQFB
Foundation date February 4, 2004
(10 years, 1 day)
Headquarters Menlo Park, California, U.S.
Area served United States (2004–05)
Worldwide (2005–present)
Founder(s)
Key people Mark Zuckerberg
(Chairman and CEO)
Sheryl Sandberg
(COO)
Industry Internet
Revenue Increase US$ 7.872 billion (2013)[1]
Operating income Increase US$ 2.804 billion (2013)[2]
Net income Increase US$ 1.500 billion (2013)[2]
Total assets Increase US$ 17.89 billion (2013)[2]
Total equity Increase US$ 15.47 billion (2013)[2]
Employees 5,800 (September 2013)[3]
Subsidiaries Instagram
Website facebook.com
Written in C++ and PHP[4]
Alexa rank Steady 2 (February 2014)[5]
Type of site Social networking service
Registration Required
Users 1.2 billion (active September 2013)[6]
Available in Multilingual (70)
Current status Active To login/singup Facebook