There have been 16 versions of Ruby on Rails (created by David Heinemeier Hansson, a programmer from Denmark) between 2005 and 2019, with the first version (version 1.0 coming out December 13, 2005, and the most recent version in that year span (version 6.0) coming out on August 16, 2019.
Old version, no longer maintained: 1.0 December 13, 2005 Old version, no longer maintained: 1.2 Old version, no longer maintained: 2.0 Old version, no longer maintained: 2.1 Old version, no longer maintained: 2.2 Old version, no longer maintained: 2.3 Old version, no longer maintained: 3.0 Old version, no longer maintained: 3.1 Old version, no longer maintained: 3.2 Old version, no longer maintained: 4.0 Old version, no longer maintained: 4.1 Old version, no longer maintained: 4.2 Old version, no longer maintained: 5.0 Old version, no longer maintained: 5.1 Older version, yet still maintained: 5.2 Current stable version: 6.0 August 16, 2019 David Heinemeier Hansson David Heinemeier Hansson (born 15 October 1979) is a Danish programmer, racing driver and the creator of the popular Ruby on Rails web development framework and the Instiki wiki. 
