Is this an alternative to ember-data? It seems to provide similar capability.
Ember-rest is an alternative to ember-data, but is not nearly as complex or ambitious. The fundamental difference is that ember-data maintains an in-memory store with a single canonical version of each record. On the other hand, ember-rest is a thin wrapper over jQuery.ajax and leaves the management of records that have been retrieved to the developer. Ember-data is also compatible with multiple adapters which can be linked to data sources other than REST (local storage, fixtures, etc). It is very ambitious but still under heavy development.