Amazon SNS, OneSignal, Firebase Cloud Messaging, Google Cloud Messaging, and Apple Push Notification Service are the most popular tools in the category “Notifications”. “Low cost” is the primary reason developers pick Amazon SNS over its competitors, while “Free of cost” is the reason why OneSignal was chosen.
A high volume push notification service for websites and mobile applications
Web Push has 30x better opt-in than email. Increase engagement with your audience using web push notifications
Push Notifications that work with just about every platform
Knock is infrastructure for sending product and customer messaging.
A platform notification service
A cross-channel marketing automation platform for customer engagement
A minimalist JavaScript library for desktop notifications
Free API to send Push Notifications to iOS & Android
Simple and reliable messaging to reach over a billion devices.
Deliver your notifications to the best channel for each user
Free web push notification service. No usage limitations, no restrictions, no data collection
Messages and notifications without intermediaries via JSON