Twitter is a social networking site that was created in 2006. Users send “tweets” to let people know what they are doing. It was created by Jack Dorsey, Noah Glass, Biz Stone, and Evan Williams. Prior to building the service, they were working on a podcast directory called Odeo.
Odeo was a directory and search destination website for RSS-syndicated audio and video. It employed tools that enabled users to create, record, and share podcasts with a simple Adobe Flash-based interface.
When iTunes 4.9 was released, it ultimately made Odeo irrelevant. The people behind the company went on to create a service called Twttr. Twttr would eventually be called Twitter. iTunes 4.9, believe it or not, ultimately led to the creation of one of the most popular social networks in the world.
The major turning point for service’s popularity was the 2007 South by Southwest Interactive conference. Over the next few years, Twitter began to see rapid growth. For mobile devices, it originally relied upon third-party apps. In 2010, Twitter acquired application developer Atebits. Atebits had built the Twitter app known as Tweetie for the Mac and iPhone. It was renamed as Twitter and released for free.
Over the years, the apps have seen various revisions. There are currently versions available for iOS while desktop users must either use the web interface or a third party app like Tweetbot or Twitterrific.