5 years ago today we started programming Twitter ("twttr" for short). 8 days later the first tweet was sent: http://t.co/Vi5ii5A #twttr
— jack (@jack) March 13, 2011
Did you know it was exactly five years ago today that Jack Dorsey and a few other team members working at Odeo first started to work on what would become Twitter? How do I know? Dorsey is tweeting about it right now.
While programming began five years ago, it wasn’t until eight days later, on March 21, 2006, that Dorsey sent the famous first (non-automated) tweet: “inviting coworkers”.
Dorsey also notes that it was exactly five years ago that they got the official go ahead on the Twitter idea, then called “twttr“. He has also shared (via his Tumblr) the conversation he had with Biz Stone about the project on that day. The first mention:
me: Biz! How goes? We’re starting work on the twttr implementation today.
Techcrunch eventJoin 10k+ tech and VC leaders for growth and connections at Disrupt 2025
Netflix, Box, a16z, ElevenLabs, Wayve, Hugging Face, Elad Gil, Vinod Khosla — just some of the 250+ heavy hitters leading 200+ sessions designed to deliver the insights that fuel startup growth and sharpen your edge. Don’t miss the 20th anniversary of TechCrunch, and a chance to learn from the top voices in tech. Grab your ticket before doors open to save up to $444.
Join 10k+ tech and VC leaders for growth and connections at Disrupt 2025
Netflix, Box, a16z, ElevenLabs, Wayve, Hugging Face, Elad Gil, Vinod Khosla — just some of the 250+ heavy hitters leading 200+ sessions designed to deliver the insights that fuel startup growth and sharpen your edge. Don’t miss a chance to learn from the top voices in tech. Grab your ticket before doors open to save up to $444.
San Francisco | October 27-29, 2025Biz: really?! NICE
Dorsey also reveals that the reason they initially droped the vowels out of “Twitter” was to try and get the SMS shortcode. …But Teen People already owned it.
Dorsey promises to share more of his original drawings, emails, and notes about the early days of Twitter. Naturally, he’s going to share them on Twitter.
I've been digging through all my drawings, emails, & notes from around that time. I'll share them over the next 2 weeks right here on #twttr
— jack (@jack) March 13, 2011
We were given the go ahead to work on the idea that morning. An IM conversation with @Biz letting him know:http://t.co/iFsNQb2 #twttr
— jack (@jack) March 13, 2011
The team was small: @Noah came up with the name & managed, @florian & I programmed, @Biz designed, all under the roof of Odeo & @Ev. #twttr
— jack (@jack) March 13, 2011
The name Twitter came from @Noah Glass & the Oxford English: "a short inconsequential burst of information, chirps from birds." #twttr
— jack (@jack) March 13, 2011
However, we wanted to focus on mobile, so we dropped the vowels to get the SMS shortcode 89887 (TWTTR). Too bad Teen People owned it. #twttr
— jack (@jack) March 13, 2011
I drew out the original idea on this notepad around 2001, named stat.us. Just needed the right time & team.http://t.co/aMft0SM #twttr
— jack (@jack) March 13, 2011
inviting coworkers
— jack (@jack) March 21, 2006