| Concurrency | Set of classes managing concurrency |
| Mesh elements | |
| mathematical functions. | |
| Service | Collection of types used in service management |
| Collection | Collection classes |
| Module | Module classes |
| Core | Core classes |
| CaseOption | Data set classes |
| Mesh | Mesh classes |
| Variable | Variable-related classes |
| Parallel | Parallelism-related classes |
| Xml | XML-related classes |
| StandardService | Standard services |
| IO | Input/output management |
| Math | Mathematical functions |
| Vectorization | |
| Geometric elements. | |
| Materials and Media. | |
| Cartesian meshes. |