I've been using Sandstorm as my primary document writing and storage location for a while. I've mostly been using the Oasis hosted service (and their alpha server prior), but I've also installed Sandstorm on a couple of VMs for dev and testing purposes. I'm pretty happy with it, and happy with the apps available for it.

There's still some things I'm waiting for, such is the life of using a platform that's still in development by a small team. Some way to organize my grains is the big one left right now. But especially recently a lot of the stuff "down the roadmap" is starting to feel finished. The Powerbox features are getting there. Active Directory integration exists now.

Since somewhere in 2014 when I started playing with it, it's always felt like it was moving forward.