Associated .SPARSEIMAGE software

Apple Mac
SPARSEIMAGE file extension
Mac OS X Sparse Image
A sparse image file (.sparseimage) is a disk image file that takes up only as much actual disk space as the data contained within, unlike a full image file (.dmg), which takes up as much actual space as the real disk it represents (regardless of the amount of unused space).
A sparse image file is created by Mac OS X's Disk Utility, and can be used (mounted) in Finder.