Board Thread:General Discussion/@comment-26163951-20180510102422/@comment-25648422-20180510214847

I would say you could try VocaloidOtaku.net. But sadly, the site is already gone.

You can try VocaVerse Network, Vocabyss, or VocalSynth.Space.

The first site is linked is pretty much more active than the two, so I suggest trying there. There is also the r/Vocaloid subreddit too.

You can also try finding Discord servers dedicated to VOCALOID that you can join.