[arianvanp]

Clojurescript clientside. Noir serverside. http://www.chris-granger.com/projects/noir/ https://github.com/clojure/clojurescript

you could also use clojurescript serverside using node.js. this is what LightTable does iirc http://www.chris-granger.com/lighttable/

[ConstantineXVI]

Be aware, Noir is deprecated: http://blog.raynes.me/blog/2012/12/13/moving-away-from-noir/

[codewright]

Noir is deprecated, use vanilla ring + libnoir or Luminus.