I think it's Clojure, Python, JavaScript, HTML, and CSS. EDIT: added Python | Hacker News

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elwell on Jan 8, 2014 | parent | context | favorite | on: Light Table is now open source

I think it's Clojure, Python, JavaScript, HTML, and CSS.

EDIT: added Python

airlocksoftware on Jan 8, 2014 [–]

And Python.

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