The File Extensions Database


.SIS File Extension

  • Developer by: Valve
  • Category: Backup Files
  • Format: Text

What is an .SIS file?

.SIS is Steam Game Backup Information File

Information file used by Steam, a gaming service that allows users to download and manage Valve games; contains plain text markups, which describe properties of a game backup; used in the process of restoring game backups.

SIS files are backed up with a .SIM file and one or more .SID data files.

Programs that open Steam Game Backup Information File
Windows
Valve Steam
File Type 2 Symbian Installation File
Developer by: Symbian Category: Misc Files Format: Binary

Installer archive for Symbian OS, an operating system used for mobile devices, such as Palm PDAs and Nokia, Ericsson, and Motorola phones; created using Symbian's "makesis" command line tool, which is bundled with the CreateSIS program; often used for S60 phone theme installations.

NOTE: To install a SIS file on a compatible phone, use the phone's communication software to transfer the file to the phone. Then open the SIS file on the phone to run the installer.

Programs that open Symbian Installation File
Windows
Nokia Suite
Nokia PC Suite
UnSIS
Easy SIS Creator
Palm OS Emulator
SISContents
File Type 3 Sisma Database File
Developer by: Digital Conference Category: Database Files Format: Binary

File created by Sisma, a password manager for Windows; contains account information and passwords, which are encrypted using 256-bit AES encryption; used for storing confidential data that can only be retrieved with a single master password.

Sisma can store expiration dates for passwords in SIS files so that the passwords are invalidated after a period of time. The software can also assist users by creating random auto-generated passwords that are pronounceable.

NOTE: Sisma is free for personal use, but requires a purchased license for non-personal use.

Programs that open Sisma Database File
Windows
Digital Conference Sisma
File Type 4 arivis ImageCore File
Developer by: arivis Category: 3D Image Files

A SIS file is an image data file saved in the ImageCore format, which is commonly used by arivis Vision4D imaging science software. It contains image data, which may include spatial plane, channel, and frame dimension data. SIS files support 8 bit, 16 bit, 32 bit, and 32 bit (float) data depths and also store metadata and color settings.

arivis Vision4D is a 2D/3D/4D imaging application that allows you to annotate, visualize, and analyze biological images on the microscopic level. You can view 2D and 3D images, as well as 4D images, which is a 3D image that includes time data. The ImageCore format was developed in order to store the large amount of image data necessary for arivis software to render the images.

To open a SIS file in Vision4D, simply click File → Open..., and select the SIS file you want to open. You may also import an image saved in another format to Vision4D by selecting File → Import. The image will automatically be converted to the ImageCore format.

NOTE: The ImageCore format was introduced in 1997.

Programs that open arivis ImageCore File
Windows
arivis Vision4D

How to solve problems with SIS files

  • Associate the SIS file extension with the correct application. On :
    Windows: Right click on any SIS file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.SIS files". Mac: Right click (or Ctrl-click) the SIS file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .SIS is Steam Game Backup Information File. Because only the current version supports the latest SIS file format. Search, therefore, e.g. on the Valve manufacturer website after an available .SIS is Steam Game Backup Information File update.
  • To make sure that your SIS file is not corrupted or virus-infected, get the file again and scan it with antivirus software.