| Object | Basic object implementation. copying,converting, |
| Exception,Error | Exception management/handling |
| Events | Event handling (EventManager), handing (#when:...), defining (class #eventsTriggered) and triggering (#triggerEvent:...) |
| Actions, evaluation | Object>>#evaluate EvaluableActions, ActionSequence, Message |
| Behavior | See Class, ClassBuilder |
| Other... | Boolean, Number, BlockClosure, Association (ComposedAssociations), Stream, Collection, Point, Rectangle, Random, RegularExpression, |
| Compiler | Code generation and compiling visitor. |
| CompilerNode | Compiler's parsing nodes |
| MethodReferences | Search references tool |
| Evaluation | DoIt support |
| FileIn | Extensible fileIn framework |
| FileOut | Export for source code, methods, clases, categories, image/snapshots. |
| Parser | Smalltalk parser and PPParser elements. |
| Snapshot | Export snapshot of executing S8 system. |
| SystemManager | Trigger system change events. |
[:text| ...code to print the text... ] installAs: #print
| NativeObject | Root of Native wrappers hierarchy. |
| NativeLibraryObject | Wrappers of foreign libraries. |
| JS | Basic reflection impl. of JavaScript object. |