At Spacedeck, we're using gradus' fork of CoffeeKup (CoffeeCup) for all of our frontend templating, driven by Backbone. It works out very well for us, even for

At Spacedeck, we're using gradus' fork of CoffeeKup (CoffeeCup) for all of our frontend templating, driven by Backbone. It works out very well for us, even for a relatively complex application (~1 year development time). I personally like the fact that it's "just" CoffeeScript and not another markup. We did a little patch though to make it generate more meaningful errors when exceptions occur, and I can say that the codebase is quite small and easy to understand.