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

Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.

Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.

Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.

EssentialPIM - EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications.

Obsidian Flight School - 🚀Obsidian Flight School is an educational product—and starter kit.