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Amazon Simple Notification Service makes it simple and cost-effective to push to mobile devices such as iPhone, iPad, Android, Kindle Fire, and internet connected smart devices, as well as pushing to other distributed services. Besides pushing cloud notifications directly to mobile devices, SNS can also deliver notifications by SMS text message or email, to Simple Queue Service (SQS) queues, or to any HTTP endpoint.

OneSignal is a high volume push notification service for websites and mobile applications. OneSignal supports all major native and mobile platforms by providing dedicated SDKs for each platform, a RESTful server API, and a dashboard.

It is a cross-platform messaging solution that lets you reliably deliver messages at no cost. You can notify a client app that new email or other data is available to sync. You can send notification messages to drive user re-engagement and retention. For use cases such as instant messaging, a message can transfer a payload of up to 4KB to a client app.

Google Cloud Messaging (GCM) is a free service that enables developers to send messages between servers and client apps. This includes downstream messages from servers to client apps, and upstream messages from client apps to servers.

Amazon Pinpoint makes it easy to run targeted campaigns to drive user engagement in mobile apps. Amazon Pinpoint helps you understand user behavior, define which users to target, determine which messages to send, schedule the best time to deliver the messages, and then track the results of your campaign.

We’ve built the smartest, most aware, precise, easy-to-use, scalable, secure and powerful push messaging platform on the planet. Our Push messaging platform leverages all that is unique about mobile as a channel, and that lights the spark to create meaningful and valuable mobile experiences. We help put your app in front of your users at the right time, and in the right place to drive usage and brand engagement.

Pushover is a platform for sending and receiving push notifications. On the server side, we provide an HTTP API for queueing messages to deliver to devices addressable by User or Group Keys. On the device side, our iOS, Android, and Desktop clients receive those push notifications, show them to the user, and store them for offline viewing.

Send push notifications to iOS and Android devices through one unified Push Notifications API for Google Cloud Messaging (GCM) and Apple Push Notification Service (APNS).

Tutorials, API references, and other documentation show you how to set up and send push notifications from any backend to any mobile device

Knock is infrastructure for sending product and customer messaging. Ship cross-channel product notifications and lifecycle messaging that drive engagement, growth, and retention.

Reach all your customers on mobile or desktop. Send and manage push notification, in-app messages, or polls. Understand user behavior, retention and engagement.

It is a push notifications platform for Web and Mobile. It is very fast, GDPR compliant and full-featured. It supports all major native mobile and web platforms, provides a RESTful API and an online dashboard to design notifications and analyze their impact.

It is a real time and secure messaging delivery API for transactional push and in app messages. Integrate our SDK in your app and start sending data-driven transactional notifications including mobile banking, targeted e-commerce and personalized one-to-one messages.

It’s easy to set up, and no technical skills are required. Using Their services, your website can subscribe users to receive pop-up notifications whenever they are online, regardless of what browser they are using or if they are on a mobile device.

It is an API that makes your integration to Web Push API, Firebase Cloud Messaging (FCM) or Huawei Mobile Services (HMS) easier. Deliverpush infrastructure will take care about message delivery to push notification service servers.

ZeroPush provides a clean web-friendly API to APNS and GCM for mobile push notifications.

A one stop shop for all notification providers with a unified and simple interface.

It is used to show messages and notifications on your mobile device in a simple and user-friendly form. Works without third-party servers.