AppleGlot is a tool for extracting text strings to be translated, and then merging them back into the localized application environment. It supports incremental localization. See AppleGlot's Setup Instructions for information on getting started with it.. A User's Manual (PDF) is also available.

Everything required to develop a channel is provided in the Sherlock 3 Channel SDK. The SDK includes technical documentation, a sample channel, an Xcode template, and an Interface Builder Sherlock palette.

Note, after you've run the installer you'll find technical documentation located in /Developer/Documentation/AppleApplications/Conceptual/Sherlock, sample channels in /Developer/Examples/Sherlock, and a Sherlock Channel option in the Standard Apple Plug-ins project group in the Xcode New Project assistant.