UV Outliner Alternatives for Mac OS X

Todoist: To-Do list and Task Manager.

Scrivener is a word-processing program and outliner designed for authors. Scrivener provides a management system for documents, notes and metadata.

Things is a delightful and easy to use task manager.

A simple and friendly task manager written in Python.

Doit.im is a Cross-platform Best Online GTD Service, which can sync with Phones.

Org-mode is an Emacs Mode for Notes, Planning, and Authoring.

todo.txt is software and operating system agnostic; it's searchable, portable, lightweight and easily Todo management software.

2Do lets you take a completely different approach to managing your tasks. With its extremely simple-to-use interface.

OmniOutliner is a commercial outlining software for Mac OS X.

Moo.do brings all of your tasks together into one consistent interface.

Conqu is a simple yet powerful task management tool designed to help you conquer your inbox and get things done.

Manuskript is an open-source tool for writers.

Hemingway Editor is a proofreading tool for writers.

SuperNotecard helps writers of fiction and nonfiction with its tools.

Goalton.com is a platform for goal and task management.