Si extension is associated with Softimage Image file. You can try to open si files with Softimage products or XnView software.
It is an image format which developed by Softimage firm. Softimage software is specially popular with its 3d modelling and animation features. The firm was bought by Autodesk which is producer of Autocad software. Si files can be opened by any Softimage product. Besides, you have chance to open these files with Xnview software. You have chance to download xnview free from the software downloading web pages. To get detailed information please check the following link:
What to use si
Image viewer products or XnView
which page related to si file
si Related Searches
You can check related links about si fileextension.