The blackbody radiation law plays a crucial role in the fields of physics, thermodynamics, optics, and remote sensing. However, its abstract nature and complex formulas make understanding challenging, and the difficulty in meeting experimental conditions becomes a problem in teaching. Based on the theoretical analysis of the twenty-seven expressions of blackbody emissivity, radiance, and energy density, as well as the six forms of Wien's displacement law and nine formulas for blackbody radiation peak intensity, we developed the shared online version of the Blackbody Radiation Expert (BRE,http://39.105.188.151:3000/index) software for practical teaching and research. This free software provides theoretical and practical experience for teaching blackbody radiation, enriches teaching resources, and offers valuable insights for the reform and optimization of similar courses.BRE can used for analysis of remote sensing field.