"Erector is a Builder-like view framework, inspired by Markaby but overcoming some of its flaws. In Erector all views are objects, not template files, which allows the full power of object-oriented programming (inheritance, modular decomposition, encapsulation) in views."

"is a template engine 100% in JavaScript" - Similar to Prototype's Template class except it loads the template markup from a url instead of a js string. Helpful.

How to use content_for :foo and yield :foo in your view/layout in Rails

Haml takes your gross, ugly templates and replaces them with veritable Haiku.

Haml is the next step in generating views in your Rails application. Haml is a refreshing take that is meant to free us from the shitty templating languages we have gotten us

in: a bunch of html pages that follow a template; out: the html for that template