Amazon Simple Notification Service (SNS) is a fully managed messaging service from Amazon Web Services (AWS) that makes it easy to set up, operate, and send notifications from the cloud. It is designed to allow developers to send messages to mobile applications, web applications, and other distributed services. With SNS, developers can publish messages to topics or directly to individual subscribers. Subscribers can receive messages through multiple endpoints such as email, SMS, and mobile push notifications. It is also possible to send messages to multiple endpoints simultaneously. SNS provides a simple and cost effective way to set up, manage, and send notifications across a variety of platforms. With SNS, developers can easily build applications that send notifications to users and devices, and can also use SNS to monitor the health of their applications. Additionally, SNS can be used to trigger AWS Lambda functions, which can be used to process messages and perform actions based on the content of the message.
Discontinued The project was no longer developed after the main maintainer, Andreas Wilhelm, passed away. The Android app, v0.3, released in June 2014, is still available in the Google Play Store and the source code is on GitHub.