What is ClojureScript?
From OO to Clojure Workshop!
Watch my free workshop to help you learn Clojure faster and shift your paradigm to functional.
There is also an active community that is happy to help you get started. You can join them on IRC (#clojurescript on freenode.net), on Slack, and on the mailing list.
Who makes it?
ClojureScript is maintained by Cognitect, the same company that maintains Clojure itself. It is under very active development and the versions are now in lock step. Since version 1.7, many libraries work out of the box in both Clojure and ClojureScript.
Not your typical Compile-to-JS language