| Level | Class | Description |
| Database | NotesACL | Represents a collection of all the access control list entries for a database. |
 | NotesAdministrationProcess | Represents the Administration Process. |
| NotesACLEntry | Represents a single entry in an access control list. |
| NotesAgent | Represents an agent. |
| NotesColorObject | Represents a color. |
| NotesDatabase | Represents a Domino database. |
| NotesDateRange | Represents a range of dates and times. |
| NotesDateTime | Provides a means to translate between LotusScript and Domino date/time formatting. |
| NotesDbDirectory | Represents the database files on a server or on the local machine. |
| NotesDocument | Represents a document in a database. |
| NotesDocumentCollection | Represents a collection of documents. |
| NotesDOMAttributeNode | Represents an attribute in a NotesDOMElementNode object. |
| NotesDOMCDATASectionNode | Represents a CDATA section in the XML data source. |
| NotesDOMCharacterDataNode | Represents character data in a DOM node. |
| NotesDOMCommentNode | Represents a comment in the XML. |
| NotesDOMDocumentFragmentNode | Represents a document fragment in the XML. |
| NotesDOMDocumentNode | Represents the entire XML document. |
| NotesDOMDocumentTypeNode | Represents a document type node. |
| NotesDOMElementNode | Represents an element in an XML document. |
| NotesDOMEntityNode | Represents an entity in an XML document. |
| NotesDOMEntityReferenceNode | Represents an entity reference in an XML document. |
| NotesDOMNamedNodeMap | Represents a list of attributes for an element node. |
| NotesDOMNode | A base class representing a single node in a DOM tree. |
| NotesDOMNodeList | Represents a list of the child nodes of an element node. |
| NotesDOMNotationNode | Represents a notation declared in the DTD. |
| NotesDOMParser | Processes XML into a standard DOM tree structure. |
| NotesDOMProcessingInstructionNode | Represents a processing instruction. |
| NotesDOMTextNode | Represents the textual content of an element or attribute. |
| NotesDOMXMLDeclNode | Represents the version of XML being used. |
| NotesDXLExporter | Represents the conversion of Domino data to DXL (Domino XML) data. |
| NotesDXLImporter | Represents the conversion of DXL (Domino XML) to Domino data. |
| NotesEmbeddedObject | Represents embedded objects, links, and file attachments. |
| NotesForm | Represents a form in a database. |
| NotesInternational | Represents the international settings in the operating system. |
| NotesItem | Represents a piece of data in a document. |
| NotesLog | Represents actions and errors that occur during script execution. |
| NotesMIMEEntity | Represents a NotesItem of type MIME. |
| NotesMIMEHeader | Represents a MIME header. |
| NotesName | Represents a user or server name. |
| NotesNewsLetter | Represents a summary document that contains information from, or links to, several other documents. |
| NotesNoteCollection | Represents a collection of design and data elements in a database. |
| NotesOutline | Represents an outline in a database. |
| NotesOutlineEntry | Represents an entry in an outline. |
| NotesRegistration | Represents the registration of an ID file. |
| NotesReplication | Represents the replication settings of a database. |
| NotesReplicationEntry | Represents the replication settings for a pair of servers in a database. |
| NotesRichTextDocLink | Represents a doclink in a rich text item. |
| NotesRichTextItem | Represents items that can contain rich text. |
| NotesRichTextNavigator | Represents a means of navigation in a rich text item. |
| NotesRichTextParagraphStyle | Represents rich text paragraph attributes. |
| NotesRichTextRange | Represents elements in a rich text item. |
| NotesRichTextSection | Represents a collapsible section in a rich text item. |
| NotesRichTextStyle | Represents a rich text style. |
| NotesRichTextTab | Represents rich text tab attributes. |
| NotesRichTextTable | Represents a table in a rich text item. |
| NotesSAXAttributeList | Represents the attributes of an element. |
| NotesSAXException | Represents information about errors which occur during SAX parsing. |
| NotesSAXParser | Represents XML as a series of events using a SAX parser. |
| NotesSession | Root of Domino database objects--for global attributes, context, and persistent information. |
| NotesStream | Represents a stream of binary or character data. |
| NotesTimer | A mechanism for triggering an event every fixed number of seconds. |
| NotesView | Represents a named view of a database. |
| NotesViewColumn | Represents a column of a view. |
| NotesViewEntry | Represents a view entry. A view entry represents a row in a view. |
| NotesViewEntryCollection | Represents a collection of view entries, selected according to specific criteria. |
| NotesViewNavigator | Represents a view navigator. A view navigator provides access to all or a subset of the entries in a view. |
| NotesXMLProcessor | Contains the properties and methods common to all DXL processes. |
| NotesXSLTransformer | Represents the transformation of DXL (Domino XML) through XSLT. |
| UI | Button | Represents an action, button, or hotspot on a form or document. |
| Field | Represents a field on a form. |
| Navigator | Represents an object in a navigator. |
| NotesUIDatabase | Represents the database that is currently open in the Domino workspace. |
| NotesUIDocument | Models the behavior of a Domino document window. |
| NotesUIScheduler | Represents an embedded scheduler in a document. |
| NotesUIView | Represents the current database view. |
| NotesUIWorkspace | Provides access to the current workspace. |