I currently have 5 target languages. Because of this, I'm trying to be a little selective of the number or resources that I use because this hobby is already expensive enough when you have just one target language.

I was using DuoLingo, but I'm ready for intermediate and advanced content for my targets. I also use Linq, but honestly, it's not that great for Japanese and Korean (Their programming parses sentences in a way where the particles are tacked onto the words that proceed them and I hate that). I've also considered using Drops but I haven't examined any of the reviews on it.

I digress, I said all this to ask if anyone knows any resources similar to Duolingo and Drops that have intermediate/advanced curriculum for more than one language? My current Targets are Spanish, Portuguese, Mandarin, Japanese and Korean. Thanks for any help that you can offer!