Top 12 Open-Source Alternatives to PubNub

PubNub

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.

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Pricing:

Official Pricing

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Product categories

API Tools Analytics App Development Backend As A Service Big Data CRM Cloud Infrastructure Developer Tools Mobile Push Messaging Realtime Backend / API Web Frameworks Web Push Notifications

Summary

The top open-source alternatives to PubNub are Pusher, Socket.io, and OneSignal. 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.

Pusher Landing Page
1

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 #Web Push Notifications #Developer Tools 55 social mentions
Socket.io Landing Page
2

Socket.io

Realtime application framework (Node.JS server)
Pricing:
- Open Source
#Mobile Push Messaging #Analytics #Developer Tools 734 social mentions
OneSignal Landing Page
3

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). )
#Email Marketing #API Tools #Realtime Backend / API 26 social mentions
Supabase Landing Page
4

Supabase

An open source Firebase alternative
Pricing:
- Open Source
#Realtime Backend / API #Backend As A Service #Web Frameworks 505 social mentions
NATS Landing Page
5

NATS

NATS.io is an open source messaging system for cloud native applications, IoT messaging, Edge, and microservices architectures.
Pricing:
- Open Source
#Data Integration #Developer Tools #Message Queue 73 social mentions
SocketCluster Landing Page
6

SocketCluster

An open, scalable realtime engine for Node.js
Pricing:
- Open Source
#Mobile Push Messaging #Cloud Infrastructure #Developer Tools 11 social mentions
Apache Flink Landing Page
7

Apache Flink

Flink is a streaming dataflow engine that provides data distribution, communication, and fault tolerance for distributed computations.
Pricing:
- Open Source
#Big Data #Stream Processing #Web Frameworks 42 social mentions
emitter.io Landing Page
8

emitter.io

Real-time communication service for connecting online devices.
Pricing:
- Open Source
#Realtime Backend / API #Mobile Push Messaging #Developer Tools
Scaledrone Landing Page
9

Scaledrone

Realtime messaging service
Pricing:
- Open Source
#Realtime Backend / API #Mobile Push Messaging #Web Push Notifications
deployd Landing Page
10

deployd

API development tool for Web and Mobile developers.
Pricing:
- Open Source
#Realtime Backend / API #Mobile Push Messaging #Developer Tools
Etebase Landing Page
11

Etebase

Etebase makes it easy to build end-to-end encrypted applications by taking care of the encryption and its related challenges.
Pricing:
- Open Source
#CRM #Realtime Backend / API #Mobile Push Messaging
GUN Landing Page
12

GUN

Self-hosted Firebase.
Pricing:
- Open Source
#Databases #Graph Databases #NoSQL Databases