File extensions that begin with X, Y or Z.
Ext. Type of file
XAR Xara drawing
XBM X Window bitmap
XFX JetFax
XIB OS X/iOS XML Interface Builder
XLA Excel add-in
XLAM Excel add-in (Open XML)
XLB Excel toolbar
XLC Excel chart
XLD Excel dialogue
XLK Excel backup
XLM Excel macro
XLS Excel spreadsheet
XLSB Excel fast binary format
XLSM OpenXML Excel macro
XLSX OpenXML Excel spreadsheet
XLT Excel template
XLTM OpenXML Excel template & macro
XLTX OpenXML Excel template
XLW Excel project
XML XML file
XPI Cross platform Firefox extension
XPL XyWrite program
XPM X Window pixelmap
XSD W3C XML Schema
XSL XML Style sheet
XWD X Window dump
XY? XyWrite document (?=version)
XYW XyWrite for Windows document
Z gzip archive
ZBD Canon image backup
ZIP PKZIP compressed
ZMDOWNLOAD Zoom download (in process)
ZOO Zoo compressed
$$$ Temporary