Notezilla - Colorful & powerful sticky notes app for Windows & Phones.
Level1Linux - The Level1Techs team is very knowledgeable while stilling being sociable as content creators. Wendell in-particular is often the feature figure of the Level1Linux content.
Laverna - Laverna is a JavaScript note taking application with Markdown editor and encryption support.
Bryan Lunduke - Bryan Lunduke is a former Software Developer, former Software Tester, Vice President, former Linux marketing guy, former writer for Network World, former openSUSE Board Member, and a long forum Linux discussion host on YouTube.
OneNote - Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.
Egee - Informative and entertaining videos about Open Source Software, Gaming, and other loosely related things.