From the WAD Manger readme:


QUOTE[ DISCLAIMER ]:

- THIS APPLICATION COMES WITH NO WARRANTY AT ALL, NEITHER EXPRESS NOR IMPLIED.
  I DO NOT TAKE ANY RESPONSIBILITY FOR ANY DAMAGE IN YOUR WII CONSOLE
  BECAUSE OF A IMPROPER USAGE OF THIS SOFTWARE.


[ DESCRIPTION ]:

- WAD Manager is an application that allows you to (un)install
  WAD packages.

  It lists all the available WAD packages in a storage device
  so you can select which one to (un)install.


[ SUPPORTED DEVICES ]:

- SDGecko.
- Internal SD slot (with SDHC support).
- USB device (1.1 and 2.0).


[ HOW TO USE ]:

1. Create a folder called "wad" in the root of the storage device.
2. Copy all the WAD packages in the folder created in the step 1.
3. Run the application with any method to load homebrew.


[ NOTES ]:

- To use the NAND emulation is necessary to have a COMPLETE copy
  of the NAND filesystem in the root of the FAT device.


[ KUDOS ]:

- Team Twiizers/devkitPRO
- svpe
- kwiirk
- All my betatesters.