<ul id="list">
    <!-- add nodes here -->
</ul>

var myList = document.getElementById('list'),
    tempFrag = document.createDocumentFragment(),
    i, listItem;

for (i = 0; i < 5; i += 1) {
    listItem = document.createElement("li");
    listItem.innerHTML = "List item #" + (+i + 1);
    tempFrag.appendChild(listItem);
}

myList.appendChild(tempFrag);

fresh-chrome.sh
"Use this script on OS X to launch a new instance of Google Chrome with its own empty cache, cookies, and user configuration."

Lineman
"a command-line utility that ... provides a thin wrapper around a number of client-side productivity tools (primarily Express, Grunt, and Testem), with the goal of helping developers focus on writing awesome web apps instead of worrying about workflow configuration."

PHP Image Cache
"A tiny PHP class that accepts a .png, .jpg, or .gif image then compresses, moves, and caches the image in the user's browser. It then returns the new source of the image to be printed in an image tag."

StatusPage.io
Hosted status pages for your company with lots of features. Displays downtime and incidents, and includes performance metrics and notifications via SMS, Webhooks, RSS, and Atom.

Version.js
"Test a different script version with the switch of a query string." An example mentioned is a jQuery plugin being tested against different versions of jQuery to ensure compatibility.

YUI Pure generator
A Yeoman generator for YUI Pure.

YeoPress
A Yeoman generator for WordPress.

BitBalloon
"Programmable HTML5 Hosting." One-line deployment along with automatic asset organization and CDN integration.

Blind
"You're a web developer. You use a retina display. You want to see what your site looks like on a 1x display. Run Blind concurrently with your normal browser to see what your site looks like in 1x resolution."