Creator here. For the past couple of months, I've been using a tiny webserver I've dubbed draughtsman to kick up my productivity while doing HTML prototypes. It's a node.js app that provides you with transparent compilation of CoffeeScript, Stylus, Jade, HAML et cetera. And directory listings (yeah, baby!) Probably more useful for designers than for devs. It's sort of like Apache/mod_php... but for people who know better than to use PHP (I kid, I kid). MIT licensed.

I do a lot of front-end prototypes for apps and websites I may or may not want to keep on building, and because of the throwaway quality of those things I don't want to be bothered with keeping all sorts of autocompiling scripts running for CoffeeScript, SASS et cetera, and I also don't want to start a Rails or Django project (yes, I use both) just for the sake of having transparent precompilation of those assets, and I also don't want to limit myself to writing plain HTML and CSS.

A bit more information over here: http://stdout.be/2011/10/25/draughtsman/

It's maybe a couple hundred lines of code, so easy to read through if that's your thing.

Just scratching my own itch here, but I'm curious to see what you guys think.