In an operating system (OS), a feature is a logical grouping of components, but in Platform Builder, a Catalog item is the smallest piece of functionality that you can select and add to an OS design.
In Platform Builder, managing, modifying, and customizing these items makes up a great part of the OS design development process.
The items that the Platform Builder Catalog contains range from board support packages (BSPs) and core OS functionality, such as applications, networking, or security, to transport layers and device drivers. You can also add items to the Catalog by using Catalog item (.pbcxml) files to import the metadata about the items. These items can be items that you or a third party have created. For more information, see Catalog Editor.