The OS has not been open sourced yet but will be soon. Personally there is <a href="https:&#x2F;&#x2F;github.com&#x2F;ThomasHintz&#x2F;" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;ThomasHintz&#x2F;</a> and <a href="https:&#x2F;&#x2F;bitbucket.org&#x2F;thomashintz&#x2F;" rel="nofollow">https:&#x2F;&#x2F;bitbucket.org&#x2F;thomashintz&#x2F;</a> and even more on my personal website <a href="http:&#x2F;&#x2F;thintz.com" rel="nofollow">http:&#x2F;&#x2F;thintz.com</a><p>Technically it could support C. One of the reasons it is based on Scheme though is that there is a lot of code already, code written in Scheme. :)