| Name | Description | Type | Package | Framework |
| StructurallyEquivalent | Identifies sets of structurally equivalent vertices in a graph. | Class | edu.uci.ics.jung.algorithms.blockmodel | SourceForge Jung |
| VertexPartition | Maintains information about a vertex partition of a graph. | Class | edu.uci.ics.jung.algorithms.blockmodel | SourceForge Jung |