Question: I'm looking for a way to send real-time notifications to users across different devices and platforms, what are my options?

Ably is a real-time digital experience platform with a variety of APIs for live chat, data broadcasting, data synchronization and notifications. It's got more than 25 client and server libraries to support a wide range of programming languages, and it's got high availability with a 99.999% uptime SLA. That makes it a good fit for EdTech, FinTech and Automotive.

Another good option is PubNub, a real-time communication service that can handle chat, push notifications, location sharing and more. It can handle a lot of API calls and connections to devices, with end-to-end encryption and fine-grained access controls. PubNub is good for immersive experiences, live audience engagement and real-time decision making.

If you want a notification API that spans multiple channels like email, SMS and push notifications, Courier is a good option. It supports more than 50 providers and offers SDKs for several programming languages. Courier's centralized analytics and logging, along with customizable UI components, means you can easily monitor and optimize your notification strategy for better user engagement and product satisfaction.