3D-Calc is a 3-dimensional spreadsheet program for the Atari ST computer. The first version of the program was released in April 1989 and was distributed by ISTARI bvba, Ghent, Belgium. The spreadsheet was 3-dimensional since it contained 13 pages of 2048 rows and 256 columns. Cells of different pages could be cross-referenced. The program included an integrated scripting language, and an integrated text module with a data import feature from the spreadsheet, allowing formatted data output, mailmerge, label printing etc.