After more than a year of development, the container runtime gets a stable, production-ready 1.0 release. CoreOS released today rkt (pronounced Rock-it) 1.0, providing container users with an alternative runtime to Docker. CoreOS first announced rkt in December 2014 after dissatisfaction arose with the state of the Docker runtime.While rkt is a competitor to the Docker runtime, users will still be able to run application containers that have been built with Docker tools.
February 5, 2016
CoreOS Launches Docker Rival Rkt 1.0
Read more at eWeek