Cloudant has announced open source, native Sync software libraries for Android and iOS, making it easier for developers to build offline access in their mobile applications. The libraries are used to manage and replicate mobile application data on phones, tablets and other occasionally connected devices, Cloudant said Tuesday. They are immediately available under Apache License Version 2.0 for developers working with Cloudant’s NoSQL database-as-a-service. Both libraries are also compatible with Apache CouchDB.