Embodiments of the present invention address deficiencies of the art in respect to modeling tools and provide a method, system and computer program product for extensible context based user interface simplification of modeling components for a modeling tool. In an embodiment of the invention, a method for extensible context based user interface simplification can be provided for a model driven development tool. The method can include detecting a context change to a new context in a model driven development tool, locating tool items mapped to the new context, and displaying the located tool items in the model driven development tool.