I would like to second the suggestion for F#. It has a nice balance in that it straddles the line between being an OSS ecosystem and an enterprise ecosystem with paid libraries. FsLab and Deedle got mentioned already but the F# website has a lot of great resources too: <a href="http:&#x2F;&#x2F;fsharp.org&#x2F;guides&#x2F;data-science&#x2F;index.html" rel="nofollow">http:&#x2F;&#x2F;fsharp.org&#x2F;guides&#x2F;data-science&#x2F;index.html</a>