Ruby
Five Ways to Manage Front-End Assets in Rails
Maintainable And Scalable Systems With Rails Engines
Using thor as rake replacement
TOD — a very simple command line todo manager
Roar — an object-oriented REST documents
JavaScript
Free JS books
Unison.js — unifying named breakpoints across CSS, JS, and HTML
Dynatable — HTML5+JSON interactive table plugin
End to End Testing with CasperJS
Implementing microstates in Backbone.js
Anitype asks a simple question: what if letters could move?