Stem separation has gone from a proprietary niche technology to a ubiquitous capability in the last few years, as exemplified by StemDeck – a free, open source stem separation app for Linux, Mac & Windows.
Stemdeck is a modern stem extraction platform, designed to isolate vocals, drums, bass, piano and guitar for practice, transcription, remixing, and creative audio workflows.
Drop in an MP3, WAV, FLAC, OGG/Opus, MP4, or M4A file, or paste a YouTube URL, and StemDeck splits the audio into up to six stems (vocals, drums, bass, guitar, piano, other). You can play them back in a DAW-style multitrack mixer: mute, solo, balance levels, zoom the waveform, loop a region, and export individual stems or a custom mix. Everything runs locally on your own machine.
StemDeck is a free, open alternative to cloud stem-splitters like Moises and LALAL.AI: no account, no quota, no uploads, no subscription. StemDeck does not store, cache, or redistribute any downloaded content. Everything happens locally and nothing leaves your machine.
“If you want stems for personal study and prefer to keep things local and free, StemDeck has you covered,” notes the developer. “If you need the polish, a mobile app, or deeper musician tooling, the commercial products are a better fit.”
Availability:
StemDeck is available now via Github as a free download.
via bpb

I mean UVR has been around a couple of years and works just fine. In fact I bet it’s using Demucs as one of the models under the hood. The interface here look much better though.
Uh, does it work with 96khz?
No, but it does work with 128khz…
ai slop
Looking at the project readme, it uses the same models as Ultimate Vocal Remover (which runs locally), but has a better/friendlier UI and some useful features like bpm and key detection added.
So a nice package, but when it comes to stem separation don’t expect a significantly different result than any of the other free/low cost options available.