iRASPA
iRASPA [1] is a GPU-accelated visualization package (with editing capabilities) aimed at material science. Examples of materials are metals, metal-oxides, ceramics, biomaterials, zeolites, clays, and metal-organic frameworks. iRASPA is exclusively for macOS. iRASPA extensively utilizes GPU computing. It can handle large structures (hundreds of thousands of atoms), including ambient occlusion, with high frame rates.