My name is Blaine and I am a Software Developer at Learning Equality. We are happy to hear that you are interested in using our software.
Kolibri is an open source platform that houses a repository of openly licensed educational content across multiple subjects and languages. You can download Kolibri for various different platforms from our website. You can find documentation regarding Kolibri, specifically the hardware requirements, here.
Regarding your inquiry about languages, Kolibri supports a variety of languages. The FAQ here may be helpful. I encourage you to check out Kolibri Studio which is where you may create an account to mix existing content from our repository and upload your own. The content on Kolibri Studio can then be imported into Kolibri.