I too haven't seen anything on Loki's sync ability. Obviously would be a very nice feature but difficult to do right. Pouch, Firebase, and GUN[1] (disclaimer,

I too haven't seen anything on Loki's sync ability. Obviously would be a very nice feature but difficult to do right. Pouch, Firebase, and GUN[1] (disclaimer, I work there) are examples. If you bake permissions into the system itself, you get monoliths like Meteor. But you can still achieve granular permissions by rejecting/accepting network requests (like with ExpressJS or Hapi, etc.), which gives you the balance of using whatever backend you like. [1]: https://github.com/amark/gun https://github.com/amark/gun