With Filestar you get 174 different skills for working productively with GIMP Image (.xcf) files.
About .Xcf
Name
GIMP Image
Extension
.xcf
Format
Binary
Category
Raster Image
Developer
GIMP
Description
The XCF file format is the native image format used by GIMP (GNU Image Manipulation Program), a free and open-source raster graphics editor used for image editing, free-form drawing, converting between different image formats, and more specialized tasks. XCF stands for eXperimental Computing Facility, which was the name of the lab where GIMP was originally developed. XCF files are designed to store all the information that GIMP needs to accurately render an image.