StarDivision Calc Spreadsheet (.sdc)
The SDC file extension stands for StarDivision Calc, a spreadsheet file format used by Apache OpenOffice Calc and StarOffice. Developed by Oracle, SDC files store data in a grid of cells, similar to other spreadsheet applications. They are compatible with various operating systems, including Windows, Mac OS, and Linux, and can be opened and edited with software like NeoOffice. SDC files can be converted to other formats such as XLS and PDF.