WAD Uninstaller v1

[xiaNaix]

Waninkoko has released an app for complete removal (including tickets) of installed WAD files (apps, channels, V.C. etc.) from your system.

1. Create a folder on the target SD card called "wad"
2. Put the WAD file of the application you want to remove in the folder.
3. Execute the un-installer.

Source: Official Site

[ccfman2004]

Couldn't this tool be used to uninstall an unwanted IOS since they are in WAD format on the update partition on a Wii ISO?

[JuddMan]

You can uninstall multiple things in one go, just stick them all in the wad folder, name them anything. The v2 installer can install multiple things at once too.