Just to say a few of them (Dear admins, none of the links are meant to be advertising, if this post is against the rules, delete it...) https://poggit.pmmp.io/pi https://google.com https://github.com https://imgcl.co http://forums.mcrafters.ml
pocketmine.net also confirmation needed that we are even allow to advertise 3rd party forums/websites BTW Do not expect good quality plugins from links above
Oh, ok I think the plugins that are (or will be) approved in releases are pretty high quality. I thought the thread creator already knows that place
there problem, poggit is a CI + release and it may cause confusion between CI builds and release builds but to be clear i assume release WILL have some line of standards as for CI, no one knows