Enthought proposes to develop a component bridge and graphical user interface (GUI) that enables circuit co-simulation using RF and micromagnetic simulation engines to aid in the design and study of micromagnetic circuit components. The work under this proposal will focus on building the integration, circuit analysis, and user interface capabilities required for investigating small components that are readily simulated using state-of-the-art micromagnetics engines. The application will be architected to function with multiple engines, with the initial effort going toward integrating SPICE and OOMMF. GUI features will include: a CAD-based component design tool with an extensive shape and materials library; multi-circuit project management with project persistence; simulation scheduling and execution; integrated circuit analyses supporting ad hoc parameter sweeps; a scripting interface and shell; 2D and 3D visualization with full access to simulation results. Proposed extensions will expand co-simulation capabilities to a broader class of micromagnetic components.