Workflowy lets you organise your brain into easily manageable lists. It also works as a single-pane outliner with inline notes. It offers one-click hoisting (zooming into branches). The online version syncs with mobile apps.
MyLifeOrganized (MLO) is a personal task outliner and to-do list manager which will help you to organize your goals, projects and tasks into a tree.
A professional list-making tool. Minimalist, keyboard-centric online outliner and task management application. Free sharing, unlimited lists, free import and export. Markdown and code support. Good for geeks 邏 and keyboard lovers .
OmniOutliner is a start-to-finish writing app. Perfect for collecting information, outlining Big Ideas, adding structure to any sort of writing, and much more. From grocery lists to email drafts to long-form composition.
Lifestyle Inspector is a free windows GTD/productivity/todo-list app with integrated Mind-mapping and powerful personal productivity reports.This app doesn't have any features at the moment.
Indispensable information organization tool for knowledge workers.
Natara Bonsai is a Palm OS and Windows Mobile outliner application with a Windows desktop client that also works as a full-featured standalone outliner and task manager. The Bonsai 5 Desktop Edition offers multiple views of a hierarchical outline: single-, dual- or triple-pane...
Official site inaccessible, but app still available on download sites.
Outlines are interactive and highly customizable notes that organize your plans, projects, and ideas in a clear way. You can synchronize your records with Evernote and iCloud, share your data, and format your notes in the built-in powerful editor.