CheatKeys - View Windows keyboard shortcuts in the current application.
Code4Startup - Learn Ruby on Rails, Python, AngularJS, NodeJS, React, Ionic by cloning AirBnb , TaskRabbit, Tinder, Product Hunt, Fiverr and . more.
KeyCue - Menu shortcuts are supposed to provide quick access to frequently used menu commands.
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.
cheat.sh - The only cheat sheet you need Unified access to the best community driven documentation
GoSkills - GoSkills offers bite-sized business courses.