Top 5 Open-Source Alternatives to Realtime Framework

The top open-source alternatives to Realtime Framework are OneSignal, Pusher, and gRPC. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

OneSignal Landing Page
1

OneSignal

Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.
Pricing:
- Open Source
- Freemium
- Free Trial
- $9.0 / Monthly (Plus usage-based costs. (Growth Plan). )
#Mobile Push Messaging #Web Push Notifications #Push Notifications 25 social mentions
Pusher Landing Page
2

Pusher

Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.
Pricing:
- Open Source
#Mobile Push Messaging #Developer Tools #App Development 50 social mentions
gRPC Landing Page
3

gRPC

Application and Data, Languages & Frameworks, Remote Procedure Call (RPC), and Service Discovery
Pricing:
- Open Source
#Web Servers #Web And Application Servers #Load Balancer / Reverse Proxy 86 social mentions
SocketCluster Landing Page
4

SocketCluster

An open, scalable realtime engine for Node.js
Pricing:
- Open Source
#Developer Tools #App Development #Mobile Push Messaging 8 social mentions
Scaledrone Landing Page
5

Scaledrone

Realtime messaging service
Pricing:
- Open Source
#Mobile Push Messaging #Developer Tools #Realtime Backend / API