The OneSignal Node SDK by SeVeNDuS is a node.js client library for use with the OneSignal Rest API. The OneSignal REST API allows developers to access the functionality of OneSignal for integration with other websites and applications. OneSignal is a push notification service for mobile and web applications and websites.
Google has begun distributing a new release of Google Play Services to all Android devices, and along with it made a new SDK available to developers with a handful of new APIs. The main additions include a Google Analytics API, Tag Manager, Address API, Google Drive API, and updated support for Google Play Games. Google Play Services 4.3 is being pushed to hardware already running Android 2.3 Gingerbread and up. This encompasses the bulk of smartphones and tablets in use today.
Facebook has announced the release of the Facebook SDK 3.0 Beta for Android and the launch of the new Android Developer Center. This latest release of the SDK for Android is what Facebook is calling the "biggest overhaul of our Android SDK so far."