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Twitter

Logo used from 2012 to 2023
Type of site	Social networking service
Available in	Multilingual
Founded	March 21, 2006; 18 years ago (2006-03-21), in San Francisco, California, U.S.
Successor(s)	X
Area served	Worldwide, except blocking countries
Owner	Odeo (March–October 2006) Obvious Corporation (2006–2007) Twitter, Inc. (2007–2023) X Corp. (March–July 2023)
Founder(s)	Jack Dorsey Noah Glass Biz Stone Evan Williams
Chairman	Elon Musk
URL	twitter.com (archived July 23, 2023)
Launched	July 15, 2006; 17 years ago (2006-07-15)
Current status	Replaced by X on July 23, 2023
Native client(s) on	Android iOS iPadOS Amazon Fire Tablet
Written in	Scala Java Ruby JavaScript Python

Twitter was a social networking service, rebranded to X in July 2023. It was one of the world's largest social media websites and the fifth-most visited website in the world.^[1][2]

Twitter was created in March 2006 by Jack Dorsey, Noah Glass, Biz Stone, and Evan Williams as a microblogging service, launched in July of that year. A signature characteristic of the service is that posts are required to be brief (originally limited 140 characters, later expanded to 280 in 2017).^[3] Users could share short text messages, images, and videos in tweets and like or retweet other users' content.^[4] Twitter also included direct messaging, bookmarks, lists and communities. Users can vote on context added by approved users using the Community Notes feature.

Twitter grew quickly; by 2012 more than 100 million users produced 340 million tweets per day.^[5] Twitter, Inc. was founded by Dorsey, Glass, Stone, and Williams in San Francisco, California, in April 2007 to manage the service. The majority of tweets are produced by a minority of users.^[6][7] In 2020, it was estimated that approximately 48 million accounts (15 percent of all accounts) were not genuine people.^[8]

In October 2022, the billionaire businessman Elon Musk acquired Twitter for US$44 billion, gaining control of the platform and becoming the chief executive officer (CEO).^{[9][10][11][12]} He stated that his aim was to promote free speech. Since his acquisition, the platform has been criticized for enabling the increased spread of disinformation^[13][14][15] and hate speech.^{[16][17][18][19][20][21][22]} Linda Yaccarino succeeded Musk as CEO on June 5, 2023, with Musk remaining as the chairman and the chief technology officer.^[23][24][25] In July 2023, Musk announced that Twitter would be rebranded to X and the bird logo would be retired.^[26][27] In December 2023, Fidelity estimated the value of the company to be down 71.5 percent from its purchase price.^[28] Since Musk's takeover, data from app-tracking firms has shown that global usage of X has declined by approximately 15%, compared to a decline of 5–10% in some other social media sites. X has disputed that usage has dropped at all.^[29][30][31]

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