The Omni Group’s OmniOutliner 4 for Mac OS X boasts a new architecture, a fresh design, and more. You can use it to write a novel, take notes at school, keep your scratchpad updated, develop a monthly budget, inventory a collection, even record and store audio from an interview or lecture.

The outliner sports a new, modern sidebar. When coupled with the cleaner inspectors, styles are easier to use. It’s the same system the Omni Group added to OmniOutliner 2 for iPad. Theme Styling makes it easy to implement font styles and color schemes.

With OmniOutliner 4, text zooming has come to the Mac. The feature lets you quickly increase your text sizes (without worrying about changing your print or page settings) to easily see or share your on-screen outline. Other nifty new features include Smart Match (for when typing in a Pop-up List cell), new date parsing logic, column hiding, a Resource Browser, and more.

OmniOutliner 4 requires Mac OS X 10.9. It’s a free update for those who’ve purchased the app within the past three years. For new users the price is USs$49.99. For more info go to .