#firebase server

[truepushblogs]

Web push service

Take your marketing to the next level with Push Notifications. 

https://app.truepush.com/home/register

[truepushblogs]

push service

Always stay in your users thoughts using personalized and timely push notifications. Register with Truepush to send unlimited push notifications for free. https://app.truepush.com/home/register

[jamessmithapp-blog]

Firebase Alternative: 3 Open-Source ways to follow

Firebase is a Google-backed, real-time backend service that empowers developers to build real-time mobile or web applications without complex protocols or rewriting the app from scratch.