OFFICIAL PAGE: NUO-STEMS
NUO-STEMS automatically separates audio files for Traktor Pro users into four stems, drums, bass, melody, and vocals. NUO-STEMS makes use of Spleeter to separate the audio. NUO-STEMS will accept mp3, flac, wav, alac, aac, other audio files and is available for both macOS and Windows. Full details at the link above.
Screenshots courtesy of NUO-STEMS