<Table> Twitter, Inc . <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> Screenshot The default page shown to logged - out users . </Td> </Tr> <Tr> <Th> Type of business </Th> <Td> Public </Td> </Tr> <Tr> <Th> Type of site </Th> <Td> News and social networking service </Td> </Tr> <Tr> <Th> Available in </Th> <Td> Multilingual </Td> </Tr> <Tr> <Th> Traded as </Th> <Td> NYSE: TWTR </Td> </Tr> <Tr> <Th> Founded </Th> <Td> March 21, 2006; 12 years ago (2006 - 03 - 21) </Td> </Tr> <Tr> <Th> Headquarters </Th> <Td> San Francisco, California, U.S. </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 37 ° 46 ′ 36" N 122 ° 25 ′ 00" W ﻿ / ﻿ 37.7768 ° N 122.4166 ° W ﻿ / 37.7768; - 122.4166 Coordinates: 37 ° 46 ′ 36" N 122 ° 25 ′ 00" W ﻿ / ﻿ 37.7768 ° N 122.4166 ° W ﻿ / 37.7768; - 122.4166 </Td> </Tr> <Tr> <Th> Area served </Th> <Td> Worldwide </Td> </Tr> <Tr> <Th> Owner </Th> <Td> Jack Dorsey (2.2% equity; 12% voting) </Td> </Tr> <Tr> <Th> Founder (s) </Th> <Td> Jack Dorsey Noah Glass Biz Stone Evan Williams </Td> </Tr> <Tr> <Th> Key people </Th> <Td> Omid R. Kordestani (Executive Chairman) Jack P. Dorsey (Director & CEO) Ned Segal (CFO) </Td> </Tr> <Tr> <Th> Industry </Th> <Td> Internet </Td> </Tr> <Tr> <Th> Revenue </Th> <Td> US $2.44 billion (2017) </Td> </Tr> <Tr> <Th> Operating income </Th> <Td> US $38.74 million (2017) </Td> </Tr> <Tr> <Th> Net income </Th> <Td> US $- 108.06 million (2017) </Td> </Tr> <Tr> <Th> Total assets </Th> <Td> US $7.41 billion (2017) </Td> </Tr> <Tr> <Th> Total equity </Th> <Td> US $5.05 billion (2017) </Td> </Tr> <Tr> <Th> Employees </Th> <Td> 3,372 (2017) </Td> </Tr> <Tr> <Th> Subsidiaries </Th> <Td> Vine Periscope MoPub </Td> </Tr> <Tr> <Th> Website </Th> <Td> twitter.com </Td> </Tr> <Tr> <Th> Alexa rank </Th> <Td> 13 US (Global, January 2018) </Td> </Tr> <Tr> <Th> Registration </Th> <Td> Required to post, follow, or be followed </Td> </Tr> <Tr> <Th> Users </Th> <Td> 330 million active users (October 2017) </Td> </Tr> <Tr> <Th> Launched </Th> <Td> July 15, 2006; 11 years ago (2006 - 07 - 15) </Td> </Tr> <Tr> <Th> Current status </Th> <Td> Active </Td> </Tr> <Tr> <Th> Written in </Th> <Td> Java Ruby Scala JavaScript </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Screenshot The default page shown to logged - out users . </Td> </Tr>

Who is the founder of twitter and when was it launched
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