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.