TreeSheets is a replacement for spreadsheets, outliners, mind mappers, text editors, PIMs and small databases.
It is also suitable for any kind of data organization, such as calendars, project management, organizing ideas, brainstorming, planning, todo lists, requirements gathering, or presentation of information. It is like an outliner, but with multiple dimensions. It has features like a text editor, but with structure.
In some ways, it is like a spreadsheet; however, it is more suitable for complex data manipulation because it is hierarchical. It also has the look and feel of a mind mapper, but more compact and organized.