via the always busy and brilliant Brett Terpstra:
Version 3.0 boasts a new, flexible folding implementation, allowing better focus on multiple areas of your projects and todos. The outliner and text editor features are more powerful, and features like zooming outline text in and out add more useful navigation to the interface.
I bought the original one a while back and went away from it when the developer took a break. Well today he's back and if you love plain text format for your organization this is THE way to go.
Get it here.