With Filestar you get 11 different skills for working productively with Radiance File (.rad) files.
About .Rad
Name
Radiance File
Extension
.rad
Format
Binary
Category
3D
Developer
Lawrence Berkeley National Laboratory
Description
The RAD file format is associated with Radiance, a suite of programs designed for the analysis and visualization of lighting in design. It is primarily used for simulating and predicting the light levels and appearance of a space prior to construction. RAD files contain descriptions of physical materials, geometry, and lighting in a scene, allowing for highly accurate light simulation and rendering. This format is widely used by architects and designers to understand and optimize the lighting of both interior and exterior spaces.