OmniOutliner

wikidPad is a Wiki-like notebook for storing your thoughts, ideas, todo lists, contacts, or anything else you can think of to write down. What makes wikidPad different from other notepad …

Org-mode is for keeping notes, maintaining ToDo lists, doing project planning, and authoring with a fast and effective plain-text system. Available also as MobileOrg on iPhone (...

Great application for creating lists and outlines that need to be accessible anywhere, good for reoccurring shopping lists or check lists / notes on how to do a complicated or …

Tree is an outliner featuring a horizontally expandable tree view. Tree assists you in organizing your information, sketching plans and brainstorming new ideas. Tree allows you to store your ideas …

The Outliner of Giants is a feature rich outline processor designed to support the creation and management of large corpuses of information, such as those generated by students, researchers, writers …

Deep Notes is a simple hierarchical note pad. You can use it to outline ideas, make to-do lists, or whatever else might need jotting down in a list, hierarchical or …