Ruby

Rails 5 trims session storage by discarding some flash messages и Sinatra Two Point Oh!
Journey of a Trailblazer (1), Journey of a Trailblazer (2), How to Reduce Controller Bloat with Interactors in Ruby и Avoid using exceptions for flow control
Phoenix vs Rails: Views and helpers, Bit Array Data Structure in Ruby и Antivirus Uploads with Clamby (video)

JavaScript

Marionette.js v3. Getting started with new version и The Case of the Missing React Framework
Performance Means Progressive Enhancement и Building your first Atom plugin
Carbide — an interactive JS programming environment, Odoo: SVG Odometer Effect Library, Grade.js — JavaScript library produces complementary gradients generated from the top 2 dominant colours in supplied images и In-view.js — get notified when a DOM element enters or exits the viewport