The OneSignal REST API allows developers to access and integrate the functionality of OneSignal with other applications. Some example API methods include scheduling and delivering push notifications for mobile and web applications. OneSignal is a push notification platform for mobile and web applications.
Six APIs have been added to the ProgrammableWeb directory in categories including Auto, Security, Air Travel, and Payments. Also recently added to the directory are SDKs for Roku streaming media and OneSignal push notification platforms. Here's a summary of the new directory content.