Ruby
Errors, more of them, and better. For sprockets, specifically sprockets-rails.
A Deeper Look at Ruby’s Enumerable
Ruby’s Enumerable module gives you a way of iterating over collections in a lazy manner, loading only what you need, when you need it. But it gives us so much more than that.
A Ruby gem to help extract the dominant colors from an image.
Javascript
Give your pages some headroom. Hide your header until you need it.
Keep multiple browsers & devices in sync when building websites.
drop in zoom anything
Exploring canvas drawing techniques
Learn about canvas drawing techniques in this interactive tutorial by Juriy Zaytsev.
A jQuery plugin for extracting dominant colors from images and applying it to its parent.
A general purpose library for building credit card forms, validating inputs and formatting numbers.
The jQuery slider that just slides.
Simple overlay instructions for your apps.
jQuery animate number plugin
Javascript library for precise tracking of facial features via Constrained Local Models
A simple physics simulation/meditation/relaxation experiment.
Web
Unveil one fantastic creation each day this month in this second edition of the fabulous Christmas experiments.
interactive slides exploring CSS 3D Transforms
CSS
SVG Tabs (Using an SVG Shape as Template)
In this great tutorial, Chris Coyier shows how to use SVG tabs on your website.
Startup Design Framework contains components and complex blocks which can easily be integrated into almost any design.
Really Simple Responsive HTML Email
When all you need is a really simple HTML email template.