File Type DiskDoubler Archive IconDiskDoubler Archive
File Format Proprietary (Symantec)
Usage Referenced by an application; not meant to be opened manually; may run a program or script when opened
Rank ★ ☆ ☆  Uncommon

Compressed file archive created by Macintosh DiskDoubler for Mac OS Classic; uses the LZ78 compression algorithm; compresses files in place on the hard drive, which are expanded on-the-fly when opened; compressed automatically in the background using AutoDoubler.

DiskDoubler was later replaced by Now Compress and Stuffit SpaceSaver. DiskDoubler is not available for Mac OS X.

Open With

IconSmart Projects IsoBuster


IconSymantec Norton DiskDoubler Pro

IconThe Unarchiver


Updated 2007