The X
extension name file type Classification
XY3 XYWrite III Document text file
XYP XYWrite Plus Document text file
XYS XYplorer Script File executable file
XYW XYWrite for Windows Document text file
XYZ Molecule Specification File data file
XYZ Celestia Sampled Trajectory Data File data file
XYZV Celestia Sampled Trajectory File data file
XZ XZ Compressed Archive Compressed file
XZFX ZipLogix ZipForm File page layout file
XZM Porteus Module Compressed file
X_B Parasolid Model Part File CAD file
X_T Parasolid Model Part File CAD file
Y Yacc Source File developer files
Y Subsampled Raw YUV Image raster image file
Y Amiga Yabba Compressed File Compressed file
Y3A Yu-Gi-Oh! ONLINE 3 Avatar File game files
Y3D Yu-Gi-Oh! ONLINE 3 Deck File game files
Y4M YUV4MPEG2 Video File video file
YAB Yabasic Source Code developer files
YAL Arts & Letters Clipart Library vector image file
YAM Yahoo! Auctions Data data file
YAML YAML Document developer files
YAODL PowerFlip 3D Image File 3D image file
YBD YobiDrive Link File Other files
YBK Microsoft Encarta Yearbook File Other files
YBK YanCEyWare eBook eBook file
YCHAT Yahoo! Messenger Chat Log data file
YCM Yugioh Card Maker File game files
YDC Yu-Gi-Oh! Card Deck File game files
YDK Yu-Gi-Oh! Deck File game files
YDL PowerFlip YAODL 3D Image File 3D image file
YDR Yu-Gi-Oh! Power of Chaos Replay File game files
YDR YouiDraw Drawing Project vector image file
YDT Yu-Gi-Oh! Power of Chaos Data File game files
YENC yEnc File encoding file
YFS YSFLIGHT Mission File game files
YGF Y Graph Format File data file
YKA Yenka Model File data file
YKCOL Locky Ransomware Encrypted File encoding file
YM Atari ST Audio File audio file
YMG Yahoo! Messenger File Other files
YML YAML Document developer files
YML2 YML Script developer files
YMP YaST Metapackage File developer files
YNC yEnc Encoded File encoding file
YOG Outerra Captured Video File video file
YOOKOO Yookoo Player Playlist File audio file
YPR BYOB Project File developer files
YPS Yahoo! Messenger Data File Other files
YRCBCK YRC Backup Archive backup file