GameCube/Wii Memory Manager is an application to backup Nintendo GameCube savegames.

Gcmm is a project started by dsbomb and justb, which is based on Askot’s modification to add SD support to the mcbackup libogc example.

Changes:

Updated to libfat
Added Wii support
Fixed restore bug (yes, savegames will restore properly)
New background
Support for interlaced and widescreen in all regions
Delete mode (dsbomb&justb)
Shows the savegame information (mostly by dsbomb&justb)
Many other fixes/modifications for the user

http://wiibrew.org/wiki/GCMM