Alternatives to Butterfly Server .NET for all platforms with any license

Firebase

Firebase gives you the tools and infrastructure to build better apps and grow successful businesses. FEATURES Move fast Firebase is a mobile platform that helps...

Freemium $ $ $ Web
Backend Database Publishing Messages in cloud NoSQL database ... Private messaging Real-time traffic REST API Scalable Self destructing messages Web-Database Add a feature

55 Like
Meteor

Meteor is a set of new technologies for building top-quality web apps in a fraction of the time. It is built around Smart Packages: little bundles of code that can run...

Free Open Source Mac Windows Linux
Backend Persistent Storage Add a feature

47 Like
Socket.io

Socket.IO aims to make real-time apps possible in every browser and mobile device, blurring the differences between the different transport mechanisms. It's...

Free Open Source Mac Windows Linux Web JavaScript ... C++ Java Node.JS
Broadcasting messages Java Real-time Add a feature

13 Like
Pubnub

PubNub is the world’s only global Real-Time Network. PubNub enables software developers to rapidly build and scale real-time apps by providing the cloud...

Freemium Mac Windows Linux Web Android ... iPhone Chrome OS iPad
Backend Data streaming Discovery engine Apps that Sync with Google Calendar ... In-Game Overlay Real-time pushing Add a feature

16 Like
deepstream.io

deepstream.io is a clusterable realtime server that handles persistent tcp and websocket connections. It offers data-sync, pub/sub and request/response. It's...

Free Open Source Mac Windows Linux Self-Hosted
Java Real-time Server-side Add a feature

8 Like
Scaledrone

Scaledrone is a realtime messaging service and platform. Send live updates, create chatrooms and collaborative tools.

Freemium Mac Windows Linux Web Android ... iPhone Chrome OS Android Tablet Windows Phone iPad
Backend Push Notifications Real-time Real-time pushing ... Scalable Websocket streams Add a feature

11 Like
Pusher

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

Commercial Mac Windows Linux Web Android ... iPhone Android Tablet iPad
Websocket streams Add a feature

7 Like
Rapid.io

Rapid.io is a cloud-hosted service that allows app developers to build realtime user interfaces without having to worry about the underlying infrastructure. It works as...
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Freemium Web Android iPhone
Auto Indexing Backend Cloud based Database ... Mobile apps Real-time Add a feature

9 Like
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MeshyDB

MeshyDB provides all the functionality native to MongoDB but in the form of RESTful API calls. Connect to your app to your MeshyDB API in minutes using nothing but...

Free Web Android iPhone Software as a Service (SaaS)
MongoDB NoSQL database REST API Api ... OpenID Connect Permission system User Roles Add a feature

2 Like
emitter.io

Real-time communication service for connecting online devices. Infrastructure and APIs for IoT, gaming, apps and real-time web.

Free Open Source Mac Windows Linux Web Android ... iPhone Windows S Android Tablet Windows Phone Self-Hosted
Api Backend Cloud based Database ... Developer Tools Real-time Scalable Software as a Service Add a feature

9 Like