Founding History of Twitter
Founded by Evan Williams, Noah Glass, Biz Stone, and Jack Dorsey.
Started design and development efforts and acquired the twttr.com domain name in March 2006
Launched as Twttr in closed beta in March 2006.
Acquired the twitter.com domain name in May 2006.
Incorporated as Twitter Inc. in June 2006.
Launched in open beta in July 2006.
Reincorporated as Twitter Inc. in April 2007.
Raised over $1.5 billion USD in 13 funding rounds.
Started trading on the NYSE in November 2013.
Headquartered in San Francisco, USA.
Click on the thumbnails below to see more details.
Year 1 of Twitter
Version 1 of Twitter (Website)
Stats of Twitter (Pre-IPO)
Full Year 1 of Twitter

MAR 2006 to FEB 2007
Extras of Twitter
2005 OCT Evan Williams on the technology of podcasting

2006 JUN Articles of Incorporation
2006 JUL Twttr promo.
2008 NOV Biz Stone keynote
2013 MAY The Future Has Already Arrived

2013 NOV Form S-1