Lotus Improv
A discontinued spreadsheet application, first released 1991 for the NeXTSTEP platform and then for Windows 3.1. It is known for pioneering the separation of data, data presentation and formula.
FlexiSheet
FlexiSheet is a multi-dimensional spreadsheet in the spirit of Lotus Improv. FlexiSheet runs on MacOS X.
Quantrix Modeler
By addressing the limitations and risks inherent to spreadsheets when developing business-critical models, Quantrix allows you ...
XCubes
Multidimensional spreadsheet for financial simulation, planning, reporting, marketing analysis etc.