The FAQ[1] has this:<p>&gt; How is it licensed?<p>&gt; The Wolfram Language has multiple licensing models depending on usage scenario. It is available free for certain casual use in the cloud, in CDF Player, and on systems such as Raspberry Pi. It is available through site licenses at educational institutions. It is also available in a variety of subscription and paid-up product offerings. The Wolfram Language is also licensed for OEM use, embedded in hardware or software systems.<p>The &quot;casual use in the cloud&quot; may be referring to this: <a href="http:&#x2F;&#x2F;programming.wolframcloud.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;programming.wolframcloud.com&#x2F;</a> (requires sign-up, haven&#x27;t tried it), and I&#x27;m not sure how you&#x27;d go about grabbing the Raspberry Pi edition.<p>[1] <a href="http:&#x2F;&#x2F;www.wolfram.com&#x2F;language&#x2F;faq&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.wolfram.com&#x2F;language&#x2F;faq&#x2F;</a>