TreeSheets (Cross-Platform Data Organizer) Now Open Source 29
Aardappel writes "TreeSheets has been available as freeware for Windows / Linux / OS X since 2008, but is now also Open Source (ZLIB license). TreeSheets is a cross between a spreadsheet (you can create grids) and an outliner (you can create grids inside grids) allowing you to create almost any structure to organize your data in."
Screenshots (Score:2, Informative)
Treat yourself and have a look at their screenshots, if you haven't already. They are rather snarky...