2533 Open source projects that are alternatives of or similar to Crossbar

Robust, Ubiquitous and Massively Scalable Messaging Platform (XMPP, MQTT, SIP Server)

A distributed MQTT message broker based on Erlang/OTP. Built for high quality & Industrial use cases.

HTTP and WebSocket built on Boost.Asio in C++11

EnMasse - Self-service messaging on Kubernetes and OpenShift

Mirror of Apache ActiveMQ Artemis

MQTT broker written in D, using vibe.d

An Open-Source, Cloud-Native, Distributed MQTT Message Broker for IoT.

🚀 A simple, lightweight and high-performance PHP coroutine framework.

HiveMQ CE is a Java-based open source MQTT broker that fully supports MQTT 3.x and MQTT 5. It is the foundation of the HiveMQ Enterprise Connectivity and Messaging Platform

High-Performance MQTT Server

Discord4J is a fast, powerful, unopinionated, reactive library to enable quick and easy development of Discord bots for Java, Kotlin, and other JVM languages using the official Discord Bot API.

Benchmarking tool to stress real-time protocols

HTTP/1.1, HTTP/2 and Websocket client for Erlang/OTP.

Blinker python library for hardware. Works with Raspberry Pi, Banan Pi, Linux devices

ZeroMQ core engine in C++, implements ZMTP/3.1

A REST microframework for Deno's HTTP server with zero 3rd party dependencies.

Flexible and Easy HTTP/REST Communication library for Java and Android

Flogo Contribution repo. Contains activities, triggers, models and actions.

🏆 Feature packed, easy-to-use game server API for Go back-ends and Javascript clients. Tutorials and examples included!

Minimal server module for SocketCluster

Dito.js is a declarative and modern web framework with a focus on API driven development, based on Objection.js, Koa.js and Vue.js – Released in 2018 under the MIT license, with support by Lineto.com

WARNING: This repository is no longer maintained

Go SDK for Huobi Spot API

Go WhatsApp Implementation in REST API

Simple wrapper for TCP client and server in C# with SSL support

iOS Real Time Chat & Messaging SDK

Communal peer-to-peer file sharing application for file servers/NAS devices

A very simple, fast, multithreaded, platform independent WebSocket (WS) and WebSocket Secure (WSS) server and client library implemented using C++11, Boost.Asio and OpenSSL. Created to be an easy way to make WebSocket endpoints in C++.

Small, fast, modern HTTP server for Erlang/OTP.

A High Performance HTTP Server for Ruby

💥 Lightweight, fast and powerful framework for building scalable WebSocket applications in Node.js

Messaging platform in C# for TCP and Websockets, with or without SSL

Websocket RPC and Pub/Sub for Python applications and microservices

A Header-Only cross-platform C++ TCP network library . Can use vcpkg(https://github.com/Microsoft/vcpkg/tree/master/ports/brynet) install

Enterprise Open Source IM Solution

💨 A real time messaging system to build a scalable in-app notifications, multiplayer games, chat apps in web and mobile apps.

Tiny MQTT broker written in Go

WebSocket & WAMP in Java for Android and Java 8

DEPRECATED : An Elixir library (driver) for clients communicating with MQTT brokers(via the MQTT 3.1.1 protocol).

Java MQTT lightweight broker

Open source RabbitMQ: core server and tier 1 (built-in) plugins

What MQTT? MQTT on websocket sample.

rust mqtt broker

Enterprise application server for Node.js and Metarhia private cloud ⚡

C++ TCP Proxy Server

Industrial IoT Messaging and Device Management Platform

JetLinks 基于Java8,Spring Boot 2.x ,WebFlux,Netty,Vert.x,Reactor等开发, 是一个全响应式的企业级物联网平台。支持统一物模型管理,多种设备,多种厂家,统一管理。统一设备连接管理,多协议适配(TCP,MQTT,UDP,CoAP,HTTP等),屏蔽网络编程复杂性,灵活接入不同厂家不同协议等设备。实时数据处理,设备告警,消息通知,数据转发。地理位置,数据可视化等。能帮助你快速建立物联网相关业务系统。

WAMP in JavaScript for Browsers and NodeJS

🐝 IoT Technical Guide --- 从零搭建高性能物联网平台及物联网解决方案和Thingsboard源码分析 ✨ ✨ ✨ (IoT Platform, SaaS, MQTT, CoAP, HTTP, Modbus, OPC, WebSocket, 物模型，Protobuf, PostgreSQL, MongoDB, Spring Security, OAuth2, RuleEngine, Kafka, Docker)

WS-Machine is a websocket finite state machine for client websocket connections (Go)

Vert.x MQTT

A user system to bootstrap your app.

Lightweight, facility, high performance golang based game server framework

Watson is the fastest, easiest way to build scalable RESTful web servers and services in C#.

Experiment with server side rendering using compose and ktor

End-to-end HTTP and REST API testing for Go.

A transport protocol agnostic (MQTT, HTTP, WebSockets etc.) Franca IDL based communication framework supporting multiple communication paradigms (RPC, Pub-Sub, broadcast etc.)

Fast RPC for browser and Node.js based on TCP, WebSocket, and MDSF

A network library implemented in C++, supports TCP/UDP/HTTP/HTTP2/WebSocket/SSL on platform Linux/Windows/OSX/iOS/Android.

The magma server daemon, is an encrypted email system with support for SMTP, POP, IMAP, HTTP and MOLTEN,. Additional support for DMTP and DMAP is currently in active development.