A .sitx file, like a .sit file, relates the Smith Micro Stuffit Software.
These files were created after 2002 and apply to all versions of the software from 7.0 onwards. They offer better compression capabilities then the early .sit file format.
.sitx File Extension
Developer:
Smith Micro
File category:
What are sitx files & how to open them - Stuffit Archive File
File category:
Developer:
Smith Micro