The SAS Analytic software is a software that is used to open .xpt files. .xpt files are normally found in a folder that contains the Web browser components. It is used in referring files that we call "plugins" which is necessary for functions and components of different Web browsers like Mozilla firefox. The reason why .xpt files are also called SAS analytic export files is because, The .xpt files are expected to be compatible with other systems because of their contributions when it comes in exporting SAS data sets into other programs or softwares and applications. Other than Mozilla firefox, .xpt extensions are also called as data formats created by SAS applications. There are other applications Aside from Mozilla firefox, IBM SPSS and SAS analytic software the most common applications that could read a .xpt file,one of these is the video game Dungeons and Dragons. It is also used to open .xpt files. though it is not a common application.