It is a kind of mini-
The CD includes nearly 6000 Dreamcast game saves directly uploadable to your VMUs, among other VMU files, sounds and images. The GUI is entirely themable and you can freely make your own custom CD including your sounds, images, VMU saves...
Click on the link for screenshots (in the "Help" section), a full description as well as the files to download.
Dream Explorer (a.k.a VMU Tool) is a mini OS for the Dreamcast that allows you to explore the content of your VMU, PC, and CD/GD, and open their files in the numerous bundled tools.
Among other things you can easily backup up VMU files to PC and vice versa, or download VMU files from CD. DCI and VMI+VMS files are supported as well as raw or DCM dumps.
The VMU menu lets you:
browse your VMUs (includes hidden files)
unlock 44 extra blocks for your VMUs
compress/uncompress VMU files
draw your own icon for the VMU screen
defragment the VMU files
play VMU minigame on your TV with the VMU emulator
change the background image of the Dreamcast's boot menu
hexedit VMU files
view PSO screenshots
edit Gameshark CDX codes
and much more...
DOWNLOAD VMU TOOL