Rhosync-Tutorial is a project mainly written in JAVASCRIPT and RUBY, it's free.
Simple Rhosync image synchronization tutorial.
This is a simple tutorial that demonstrates how images (blobs) can be synchronized using Rhosync.
There are two components:
1) pics: the Rhodes application that runs on the Android simulator; 2) pics-server: the Rhosync application that connects to the heroku backing datastore.