Haskell

Serenade in Haskell

One of the things that I think is great about Haskell is the way that you can use the language to design new syntax. After reading a quick introduction to Serenade.js, one of the features that caught my eye was their templating system. It has a fairly elegant interface that provides a concise language for generating HTML, though it seems like a heavyweight solution, as it requires implementing a parser.