It is a very active project. I'm using it at home with a 12Tb server for a central storage point in our household. It's been great for us. It is quite basic at the moment, but has a tonne of promise. Haven't found it to be buggy myself.
As other said it's actively developed. The disadvantage is that the UI/UX so far is not exactly great for now. I tried it for 2 months but I stopped using it as Google is far easier to use. I'll probably give it another try in a year or so.