Workflowy - A better way to organize your mind.

Microsoft To-Do - Task management tool

Dynalist - Dynalist is a web app that lets you break down and organize your thoughts in the format of lists.

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

Taleguild - Web application for short story writers and essayists

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