.CST File Type - Manga Studio Story File
In Windows .CST File Open With
- CELSYS Clip Studio Paint Pro
In Mac .CST File Open With
- CELSYS Clip Studio Paint Pro
.CST File Type - Director External Cast File
In Windows .CST File Open With
- Adobe Director
In Mac .CST File Open With
- Adobe Director
.CST File Type - Canvas Custom Set File
In Windows .CST File Open With
- Canvas GFX Canvas X Pro