You can download the latest releases from the installer links below.
Redshift 3.0 versions on Windows and Linux require recent or the latest NVidia drivers! These versions contain OptiX7 support which is part of the NVidia driver
The macOS installer download button below is for the latest "Metal" version which only works on Big Sur and AMD GPUs
To obtain the macOS "CUDA" installer (which work only on High Sierra and NVidia GPUs), please go to the Redshift forums