What is "omnioutliner"

OmniOutliner is a commercial outlining software for Mac OS X produced by The Omni Group. OmniOutliner has most of the features of a conventional outliner, allowing the user to create nested lists of topics for almost any purpose, but has additional features extending its functionality beyond simple outlining. Recent versions of the software are universal binaries. OmniOutliner received a special mention in the 2005 Apple Design Awards, and Macworld gave the "Professional" version its highest rating.

OmniOutliner 4 for Mac was released on January 15, 2014, with a modern redesign with new sidebars and a dynamic inspector, text zooming, smart match, date pasting logic, and more.

OmniOutliner 4.5 for Mac was released on March 2, 2016, a major update with more control printing selected rows, filtering indentation, export with tab separated indentation, and more.