There are 2 repositories under wiimm topic.
»Wiimms ISO Tools« is a set of command line tools to extract, modify and create Wii and GameCube ISO images and WBFS containers.
»Wiimms SZS Tools« is a set of command line tools to extract, modify and create different files of game Mario Kart Wii and of other Nintendo games.
witを使ったディスクイメージファイルの操作を手助けするための簡易的なCLIプログラム