Honeybee supports detailed daylighting and thermodynamic modeling that tends to be most relevant during mid and later stages of design. Specifically, it creates, runs and visualizes the results of daylight and radiation simulations using Radiance and energy models using EnergyPlus/OpenStudio. It accomplishes this by linking the Grasshopper/Rhino CAD environment to these engines. It also serves as an object-oriented Software Development Kit (SDK) for these engines.