The Homebrew Browser parses package supported controllers by the following system:
One wii remote is supported
Two wii remotes are supported
Three wii remotes are supported
Four wii remotes are supported
Gamecube controller is supported
Nunchuck is supported
Classic Controller is supported
Compatible with SDHC cards
Keyboard is supported. This is not displayed on the Homebrew Browser.
Wii Zapper is supported. This is not displayed on the Homebrew Browser.
If a package returns it's controllers are "wwwwgncs", then it supports 4 wii remotes, a gamecube controller, a nunchuck and is compatible with SDHC cards.