A few years later, in October 2013, Google released an open source version of their own container system called lmctfy, which is actually short for Let Me Contain That For You. This tool is actually what they used on their own servers to enable them to run Linux application containers, and it was designed as an alternative to LXC.
lmctfy, LXC, and Docker all occupy the same space. To this end, Google actually stopped all development on lmctfy in 2015. The project's GitHub page has an announcement that states that Google has been collaborating with Docker and they are porting the core concepts of lmctfy to libcontainer.