Just going to say it, not ALL of the languages on there are Indo-European, we know this, so many people have felt the need to point it out. It's ok, it's not strictly for Indo-European languages. But the quality of the content is very good, a lot better than some other sites out there.
And just a comment on 101languages.net, the content is sub-standard, a good portion of it being incorrect, get a native speaker to look at some of the pages for some of the languages and they will show you exactly how much is actually wrong.