The CCK (Client Customization Kit) is a tool that is useful for corporate system administrators and Mozilla partners who want to distribute Firefox with customizations for a particular environment. This allows customizations such as changing the default homepage, adding a search plugin, and even changing the default proxy settings.
Once you’ve created a CCK extension, however, there wasn’t an easy way to package up Firefox with customizations for distribution. I’ve written a utility which can accomplish this task. This tool can take the official Windows, Mac, and Linux builds of Firefox 18.104.22.168 and repackage them with an additional extension.