If you run CodiMD in Sandstorm.io, you get very specific fine-grained sharing to a single document as an inherent capability. :) Probably the biggest perk Goog

If you run CodiMD in Sandstorm.io, you get very specific fine-grained sharing to a single document as an inherent capability. :) Probably the biggest perk Google Docs/Sheets/etc. has is that each app isn't beholden to develop it's own account and sharing model. A bunch of apps with very limited or non-existent security models can work really well when you put them into a larger platform that implements those things instead. Etherpad, EtherCalc, etc. are similarly awesome apps that kinda need outside help if you want secure sharing.