
Pusher
Notification Infrastructure
Pusher provides hosted APIs for building realtime features like push notifications, activity streams, and in-app chat into web and mobile applications without managing infrastructure.
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Notification Infrastructure
Pusher provides hosted APIs for building realtime features like push notifications, activity streams, and in-app chat into web and mobile applications without managing infrastructure.

Push Notification Platforms
Simple HTTP-based pub/sub notification service for sending push notifications to phones and desktops.
Price$5+ / month
Price position: below this category's displayed range.
Notification Infrastructure
Multi-channel notification infrastructure platform for product teams to design, route, and deliver notifications across email, push, SMS, and chat.
PriceUsage-based

Notification Infrastructure
Knock is a notification infrastructure platform that provides APIs for building and managing multi-channel notification systems across in-app, email, push, SMS, Slack, and other channels.

Notification Infrastructure
Novu is an open-source notification infrastructure platform for managing multi-channel notifications across in-app, email, push, SMS, and chat from a unified API.
Push Notification Platforms
Simple push notification service enabling applications and scripts to send real-time notifications to iOS and Android devices via a clean API.
Price$5 one-time

Push Notification Platforms
OneSignal is a customer messaging platform specializing in push notifications, email, SMS, and in-app messaging, serving over a million developers and businesses with a generous free tier.

In-App Messaging
Chat-as-a-service platform with channel messaging, reactions, and push notifications for iOS, Android, and web.
Price$29+ / month

Notification Infrastructure
Multi-channel notification API for SaaS apps with in-app notification center, email, SMS, push, and Slack delivery with template management.
Price$8+ / month
Blockchain Development Platforms
Alchemy provides blockchain development infrastructure including node services, APIs, analytics, and developer tools for building web3 applications.