OneSignal Alternatives

Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.

Push Notifications for Websites

Engage your mobile and desktop web users with intelligent web push notifications.

Fight user churn with great user onboarding. Interactive product tours and smart tips significantly improve your user retention.

Visit Website     freemium €29.0 / Monthly

Free Forever Web and Android Push Notifications for Everyone

open-source

PubNub is a real-time messaging system for web and mobile apps that can handle API for all platforms and push messages to any device anywhere in the world in a fraction of a second without having to worry about proxies, firewalls or mobile drop-offs.

Mobile marketing solutions across all major mobile platforms.

Send push notifications programmatically at scale

One Complete Database Service that does data-storage, search,real-time and a whole lot more.

The marketing moment prefigures the marketing of tomorrow, where marketing will make sense and the...

Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.

The easy to use mass and emergency notification platform. Send a phone call, text message or e-mail to your entire list of people in seconds.

freemium

a simple self-hosted server for sending and receiving messages