OFFICIAL PAGE: DeMIX Essentials
DeMIX Essentials, from AudioSourceRE, is an easy to use, yet powerful, sound source separation application which allows you to quickly separate vocals, drums, and other instruments from mono or stereo source material. Version 2 of DeMIX Essentials now includes All Vocal, Bass, and Drum separators and allows you to separate, mix and merge up to 4 tracks. A Multi-channel mixer is included for quick & easy remixing. You can export the individual separated tracks for further refinement and use in a DAW, as well as bounce the mixer output if desired. Since DeMIX Essentials is cloud-based, all of the heavy number crunching is done in the cloud. DeMIX Essentials is available for both macOS and Windows. Full details at the link above.
Screenshots courtesy of AudioSourceRE