Todoist - Todoist is a to-do list that helps you get organized, at work and in life.

Microsoft To-Do - Task management tool

doo - A smart, simple app for reminders and to-dos

Laverna - Laverna is a JavaScript note taking application with Markdown editor and encryption support.

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.

Taskful - Deadlines, meet your match.