| Event |
| Exceptions |
| GraphTrait | The fundamental traits of graphs and subgraphs |
| HookableTrait | |
| SerializableTrait | This trait is used to add demonstrational serialization functionality to package elements. |
| EntityInterface | An descriptor interface for EntityTrait. |
| EntityWorkerInterface | An worker interface for EntityTrait. |
| GraphInterface | An interface for the Graph class |
| HookableInterface | |
| NodeInterface | An descriptor interface for the Node class |
| NodeWorkerInterface | An worker interface for the Node class |
| PredicateInterface | Interface for the Predicate class. |
| AdjacentNode | For easy maintenance of TailNode and HeadNode classes. |
| AttributeBag | Holds edge and node attributes |
| Direction | Defines Edge Direction. |
| EdgeList | Holds the relationship between nodes and edges. |
| EncapsulatedEdge | Encapsulated Edge used inside EdgeList |
| Graph | Graph contains nodes |
| HeadNode | Edge's Head |
| ID | Immutable, cryptographically secure identifier |
| Logger | A basic logger class compatible with PHP Psr 3 standards |
| Node | Atomic graph entity, Node |
| Predicate | Predicates determine Edge capabilities |
| SubGraph | SubGraph class |
| TailNode | Edge's Tail |