FLStudio includes a wide range of plugins: generators, tools and effects. However most of these are FLStudio format only. Which means they only work in FLStudio.
If they are available as a VST or AU format ...
FLStudio, for some reason I cannot find it. I have tried everything, deep slow scan, adding a path directly to that folder, setting the VST Plugin search folder to the folder that is containing all of them. For some ...