Spreadsheet created with the Calc spreadsheet program included with Apache OpenOffice and StarOffice; includes flexible cell formatting options, such as freely rotating contents, backgrounds, borders, and templates.

SDC files can be exported in the Microsoft Excel (.XLS) or Portable Document (.PDF) formats from within Calc.

Important: Apache OpenOffice was formerly known as OpenOffice.org.

The Secure Download Cabinet format is used by Microsoft's MSDNAA (MSDN Academic Alliance) program. It is an encrypted and compressed package format used for distributing software.

MSDNAA is a program developed by Microsoft for distributing software to educational institutions, such as colleges, universities, and high schools. Participating schools can download licensed copies of Microsoft programs for an annual fee.

The UnpackSDC program should automatically open and install SDC packages when they are downloaded from the Internet.

Stardock Central archives downloaded files in a single package with an ".sdc" extension. These archives contain all the files that have been downloaded with Stardock Central. The SDC file can be used to reinstall Stardock data or move the data to another machine.

Stardock Central is a download manager that can be used with several Stardock products. It provides a simple way to download, install, and manage Stardock software. Stardock Central supports download queues and mirrored server downloads. It can also resume downloads that have been temporarily stopped.