Cloudant

The Cloudant Data Layer is a managed service for developers who want a data layer that scales with their applications from development to test to Web scale. Built on the Apache CouchDB document database, a RESTful JSON API, and incremental MapReduce.

Features:

• collects, stores, analyzes and distributes application data across a global network of secure, high-performance data centers.
• delivers low-latency, highly-available data layer performance.
• includes built-in support for full-text search, data replication and sync, off-line computing and other advanced data layer capabilities.

Offerings range from free (development sandbox) environments to various levels of paid offerings designed to accommodate small production applications all the way up to massively scaled enterprise and global applications. You can set up an account for free or contact Cloudant with specific questions.