World of Aqua is a free icon collection for Mac platform. To customize a desktop icon manually in Mac OS X, you need to access the Finder's "Inspector". The inspector is shown or hidden when you press Command-Option-I with an item selected. Opening the Inspector for an item reveals various types of information including what the current icon is set to.
Launchd(8) frontend for Mac that allows you to manage and debug system & user services with a sophisticated interface.
