15 Open-Source Push Notification Projects, Alternative to Apple and Google (Firebase) services
Build Push Notification System with PHP & MySQL | WD
Send ( Android and IOS ) Push notification in CodeIgniter
GitHub - hasancse91/Android-Firebase-Notification-With-PHP-Backend: This is a practice repository of Android Firebase Push Notification with PHP Backend. I wrote a blog post about this topic on my Bengali blog site.
35 Best Free Push Notification Services and Tools (+ Open Source Push Notification Services to Consider)
Push Notifications | IBM
Add push notifications to a web app
Implementing Web Push Notifications—MERN Stack Application
How does Apple push notifications work while we are not using the app! - Tech Prastish
Dynamic Web Notification using PHP and JavaScript Tutorial | Free Source Code Projects and Tutorials