Outliner4X Pro for OSX 1.0 for Mac can be downloaded from our website for free. The actual developer of this Mac application is InterServices. The application is included in Theming Tools.
From the developer:
Outliner4X makes it easy to organize your thoughts, ideas and your work with Mac OS X. It is built to be easy to use and powerful so you don't need to study a 100 page manual just to get started. And to make it even better we implemented an auto-save feature. No need to think about file names and folders - everything is done automatically. Just like with Apple's Stickies.
You may want to check out more Mac applications, such as RiffMaster Pro, Sequel Pro or WASEL Pro, which might be similar to Outliner4X Pro for OSX.
Document management
Music Production