| ▼NXapian | The Xapian namespace contains public interfaces for the Xapian library | 
| NAuto | Database factory functions which determine the database type automatically | 
| NChert | Database factory functions for the chert backend | 
| NInMemory | Database factory functions for the inmemory backend | 
| NRemote | Database factory functions for the remote backend | 
| NUnicode | Functions associated with handling Unicode characters |