| Category | Information about the category associated with an item. |
| Channel | A description of the RSS feed. |
| Enclosure | Describes a media object that is attached to the item. |
| Factory | Factory class for creating new RSS elements. |
| Guid | Globally unique identifier. |
| Image | Image that can be displayed with the channel. |
| Item | Item element defines an article or "story" in an RSS feed. |
| RSS | Base class for the elements of an RSS channel. |
| RssTask | A Task that polls RSS feeds. |
| Source | The RSS channel that the item came from |