Mailcatcher - runs a super simple SMTP server which catches any email message sent to it to display in a web interface.
Learn Enough Command Line to Be Dangerous by Michael Hartl an introduction to the Unix command line. Brief and really informative.
LinuxJourney.com - now I know where to redirect my #Linux-newbie friends. Even more, I will go through it by myself!
Mailcatcher - runs a super simple SMTP server which catches any email message sent to it to display in a web interface.
php-queue - unified front-end for different queuing backends. Includes a REST server, CLI interface and daemon runners.
pesticide.io help to find CSS bug by placing an colored outline on every element on a page. Also available as Chrome extension.
SuperHeroJS - great collection of articles on all aspects of JavaScript. Starting from very basics up to questions of advanced usage, code organisation, testing, tools and performance
Awesome library for dynamic CSS shadows shine.js. Dynamic light positions, customizable shadows, uses text or box shadows based on content