Glad you mentioned this popek. Are you a programmer?
Life is hard bro let's make it easy...
Portable version of Python and spleeter already installed with a gui https://makenweb.com/#spleetergui
Code etc here
- Deezer's own online implementation. 2/5 stems split
- Vocals + Instrumental split
- 2/4/5 stems. Mp3 or WAV. Variable Cutoff.
- Vocal remover. Some other gimmicky tools that are kinda interesting.
unmix.us used to be the spot but seems dead but it's all still open-unmix
Paid alternatives that offer varying degrees of mixed audio to separate stems
Hit n Mix infinity
virtualdj - Latest update brings real-time stems separation to any track while you're dj'ing...crazy stuff.
Pretty sure there's a bunch I'm missing will dig in my bookmarks and update this later.
I've used everything there apart from the new virtual dj and I only took the audionamix trial but if anyone needs examples before they buy let me know.