Pluralsight - Pluralsight is a learning management system (LMS) that helps aspiring tech professionals learn the basics of the trade and lets established professionals expand their skill sets.

Kubernetes - Kubernetes is an open source orchestration system for Docker containers

Bloc.io - Learn to code and become a web developer in Ruby on Rails, HTML, CSS, Javascript, and jQuery in Bloc's Intense Online Web Development Apprenticeship.

Google Site Reliability Engineering - How Google runs production systems

TutsPlus - Learn Creative Skills, Shape Your Future

Ganeti - Ganeti is a cluster management tool built on top of existing virtualization technologies.