Mindstorms is a product that was developed by the LEGO® company in Denmark in collaboration with the Media lab from the Massachusetts Institute of Technology (MIT). In this collaboration MIT delivers the educational ideas and LEGO performs them by expanding their products.
There is a lot of information to be found on the internet. Of course tere is info about the products at LEGO’s own website and about the history of this joint venture at MIT media lab’s website.
This is an initiative to make the Mindstorms EV3 accessible for other programming languages. ~ is a Debian Linux especially tailored for the EV3 brick. You burn it on a microSD card and boot the EV3 from that card. It then runs a Debian Linux (Jessie) which you can access with ssh (for example).
Much information can be found here at the ev3dev,org website, amongst other things a good “getting started” page.
Python on ev3dev
My reason for investigating ev3dev was that I would like to program things in Python. Information on this topic can be found at the inspiredtoeducate website and on the famous Github website.