Helm

Helm runs in GNU/Linux, Mac OSX and Windows. Run Helm as a standalone synthesizer or as an LV2, VST, VST3 or AU plugin. Comes in both 32-bit and 64-bit versions

this is pretty sweet, brand new as far as i can tell, i've never come across it before, i kinda like the idea of using this maybe with OBS because it will run both standalone or as a VST plugin and it supports those! -- gonna give it a shot!