According to Apple, everything required to develop a channel is provided in the Sherlock 3 Channel SDK. The SDK includes technical documentation, a sample channel, a Project Builder template and an Interface Builder Sherlock palette. The SDK also provides sample code to migrate a Sherlock 2 plug-in to Sherlock 3.
The Sherlock Channel Development Web site also provides other resources for developers wishing to take part in creating channels, such as a mailing list.
Sherlock 3, released as part of Mac OS X 10.2 Jaguar, took the utility to a new level and made it more of a Web services tool. Previous versions of Sherlock would search your hard drive for files, as well as acting as an Internet search tool.
With the release of Sherlock 3, Apple partnered with several companies to allow users to gather information on flights, auctions from eBay, the yellow pages, stock quotes, movies, maps and more.
first told MacCentral about the SDK
during a meeting at Macworld Conference and Expo in New York City this past summer.