Todo by Appigo - What sets Todo Cloud apart from your run-of-the-mill to-do and task-list apps is that it is straight-up powerful. It's time to get things done.
Smarter Every Day - Smarter Every Day is a channel run by Destin, who is a University of Alabama engineer who provides in-depth analysis videos of various scientific and engineering marvels of the world around us.
Laverna - Laverna is a JavaScript note taking application with Markdown editor and encryption support.
cgmasters - CG Masters is an art training platform for everything Blender. We offer high quality and large-scale training courses as well as many free video tutorials on all topics, including modeling, texturing, animation, game creation, and 3D printing.
Notezilla - Colorful & powerful sticky notes app for Windows & Phones.
Khan Academy - Khan Academy offers online tools to help students learn about a variety of important school subjects. Tools include videos, practice exercises, and materials for instructors. Read more about Khan Academy.