3D animation file used by Cal3D, an open source toolkit used for character animation; stores bone movements for the model's skeleton, which is specified in a .CSF or .XSF file; used for creating realistic human motions. XAF files store animation data in an XML format, but Cal3D animation data can also be stored in a binary format using .CAF files.
File created by the Affirm Transcript Editor, a program used for creating deposition transcripts during legal proceedings; stores rich text and contains the verbal testimony of a witness recorded out of the courtroom. XAF files enable lawyers to store digital evidence during litigation.