Many sites with lots of written content employ specially crafted print style sheets. That way, a user can print out the relevant content without wasting paper on navigation, ads, or anything else not germane.
Articulate.js, a jQuery plugin, is what I consider the narrative equivalent. With as little as one line of code, it enables developers to create links that allow users to click, sit back, and listen to the browser read aloud the important content of a web page. In some ways, it can turn a thoughtful essay or article into a mini podcast. And because it uses built-in JavaScript functionality, no browser extensions or other system software is needed.