Vagrant is a tool for building complete development environments. With an easy-to-use workflow and focus on automation, Vagrant lowers development environment setup time, increases development/production parity, and makes the "works on my machine" excuse a relic of the past.
Vagrant was started in January 2010 by Mitchell Hashimoto. For almost three years, Vagrant was a side-project for Mitchell, a project that he worked on in his free hours after his full time job. During this time, Vagrant grew to be trusted and used by a range of individuals to entire development teams in large companies.
In November 2012, HashiCorp was formed by Mitchell to back the development of Vagrant full time. HashiCorp builds commercial additions and provides professional support and training for Vagrant.
Vagrant remains and always will be a liberally licensed open source project. Each release of Vagrant is the work of hundreds of individuals' contributions to the open source project.