This week Ken Case of the Omni Group announced the upcoming OmniOutliner Essentials. It is a focused version of OmniOutliner that doesn’t have quite all the bells and whistles you get from OmniOutliner Pro but still a wicked useful outlining application. The best part is that they are going to sell this for just $9.99. There is also a price reduction on OmniOutliner Pro. As they work towards the release of OmniOutliner 5, OmniOutliner Essentials is available for public test.
The first version of OmniOutliner I purchased was in a box at a computer store. Those stores are all gone but OmniOutliner continues to evolve.