Notezilla - Colorful & powerful sticky notes app for Windows & Phones.
Remember The Milk - Remember The Milk is a task and time management application for mobile devices.
Laverna - Laverna is a JavaScript note taking application with Markdown editor and encryption support.
Notepad Checklist - A checklist made by notepad.pw, easy short and fun to use.
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.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.