Keybase is on the forefront of what the future of data and communications must look like to overcome security concerns that plague current systems. I'd say it's a little geeky for the average user, but gets better all the time. I've been using Resilio Sync for most of all my data because it's cross-platform, but Keybase Teams looks to be cross-platform as well now and makes an interesting case here to be the all-in-one replacement with a security focus.