We have a mature JSON database with p2p sync capability, that is open source under the Apache 2.0 license. http://developer.couchbase.com/mobile http://develop

We have a mature JSON database with p2p sync capability, that is open source under the Apache 2.0 license. http://developer.couchbase.com/mobile http://developer.couchbase.com/mobile We have native implementations for iOS, Android (Java), Windows (C#), and play well with the Apache CouchDB ecosystem, so you can also use projects like PouchDB. I wish I had time to write the code it would take to add p2p sync to this project. It might not be hard considering the PouchDB source already has implementations of most of the algorithms in JavaScript.