Browse free open source WebSocket Servers and projects for Linux below. Use the toggles on the left to filter open source WebSocket Servers by OS, license, language, programming language, and project status.

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  • 1
    socket.io

    socket.io

    Realtime application framework (Node.JS server)

    socket.io is a JavaScript library that allows for realtime, bi-directional communication between web clients and servers. It is composed of two parts: a Node.js server and a JavaScript client library that runs in the browser. socket.io is focused on both reliability and speed, delivering an immensely powerful, fast and yet easy to use realtime engine that’s used by just about everyone: from Microsoft Office and Zendesk to hackathon winners and small startups. It’s considered one of the most depended-upon npm modules, and works on every platform, browser or device.
    Downloads: 9 This Week
    Last Update:
    See Project
  • 2
    ws

    ws

    Tiny WebSocket library for Go

    Zero-copy upgrade. No intermediate allocations during I/O. Low-level API which allows building your own logic of packet handling and buffers reuse. High-level wrappers and helpers around API in wsutil package, which allow to start fast without digging the protocol internals. Existing WebSocket implementations do not allow users to reuse I/O buffers between connections in clear way. This library aims to export efficient low-level interface for working with the protocol without forcing only one way it could be used. Library is tagged as v1* so its API must not be broken during some improvements or refactoring. Example applications using ws are developed in separate repository ws-examples. We can apply the same pattern to read and write structured responses through a JSON encoder and decoder.Zero-copy upgrade helps to avoid unnecessary allocations and copying while handling HTTP Upgrade request.
    Downloads: 8 This Week
    Last Update:
    See Project
  • 3
    Netty-socketio

    Netty-socketio

    Socket.IO server implemented on Java

    This project is an open-source Java implementation of Socket.IO server. Based on Netty server framework. Supports 0.7...0.9.16 (netty-socketio 1.6.6) and 1.0+ (netty-socketio latest version) version of Socket.IO-client. Supports distributed broadcast across netty-socketio nodes (Redisson, Hazelcast). Supports OSGi, supports Spring, lock-free and thread-safe implementation, and declarative handler configuration via annotations. YourKit is kindly supporting this open source project with its full-featured Java Profiler. YourKit, LLC is the creator of innovative and intelligent tools for profiling Java and .NET applications. CentOS, 1 CPU, 4GB RAM runned on VM, CPU 10%, Memory 15%, 6000 xhr-long polling sessions or 15000 websockets sessions, 4000 messages per second.
    Downloads: 7 This Week
    Last Update:
    See Project
  • 4
    µWebSockets

    µWebSockets

    Compliant web server for the most demanding of applications

    Being meticulously optimized for speed and memory footprint, µWebSockets is fast enough to do encrypted TLS 1.3 messaging quicker than most alternative servers can do even unencrypted, cleartext messaging. Furthermore, we partake in Google's OSS-Fuzz with a ~95% daily fuzzing coverage with no sanitizer issues. LGTM scores us flawless A+ from having zero CodeQL alerts and we compile with pedantic warning levels. µWebSockets is written entirely in C & C++ but has a seamless integration for Node.js backends. This allows for rapid scripting of powerful apps, using widespread competence. We've been fully standards compliant with a perfect Autobahn|Testsuite score since 2016. Companies with everything to lose rely on µWebSockets on a daily basis - we power the trading APIs of Bitfinex.com & Kraken.com, handling volumes of multiple billions of USD every day. Other companies include Trello, where µWebSockets is serving their 50 million users with real-time board updates.
    Downloads: 7 This Week
    Last Update:
    See Project
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  • 5
    GraphQL WebSocket

    GraphQL WebSocket

    Coherent, zero-dependency, lazy, simple, GraphQL

    Coherent, zero-dependency, lazy, simple, GraphQL over WebSocket Protocol compliant server and client. Messages are represented through the JSON structure and are stringified before being sent over the network. They are bidirectional, meaning both the server and the client must conform to the specified message structure. Connection is a connection within the established socket describing a "connection" through which the operation requests will be communicated. The server can close the socket (kick the client off) at any time. The close event dispatched by the server is used to describe the fatal error to the client. The client closes the socket and the connection by dispatching a 1000: Normal Closure close event to the server indicating a normal closure.
    Downloads: 6 This Week
    Last Update:
    See Project
  • 6
    LAppS

    LAppS

    Lua Application Server for micro-services with default communication

    This is an attempt to provide very easy-to-use Lua Application Server working over WebSockets protocol (RFC 6455). LAppS is an application server for micro-services architecture. It is build to be highly scalable vertically. The docker cloud infrastructure (kubernetes or swarm) shall be used for horizontal scaling. LAppS has most scallable WebSockets server out there. LAppS is the same thing to WebSockets as the Apache or Nginx are to HTTP. LAppS does not supports HTTP (though it supports HTTP Upgrade GET request as per RFC 6455). The only supported scripting language so far is the Lua.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 7
    Ratchet WebSocket

    Ratchet WebSocket

    Asynchronous WebSocket server

    Ratchet is a loosely coupled PHP library providing developers with tools to create real time, bi-directional applications between clients and servers over WebSockets. Write your own chat (aka "Hello World!" for sockets) application in a matter of minutes. After understanding "the new flow", event driven programming, compared to traditional HTTP request/response - writing any application on top of Ratchet becomes fast and easy. Ratchet provides many components for you to pick and choose from to easily add functionality. The component architecture allows you to focus on functionality with the ability to reuse and add or remove other component functionality. Ratchet is fully PSR-4 compliant, so it naturally plays well with others. Leveraging components from Symfony2, development should feel similar to many. Ratchet passes all WebSocket tests to ensure it works on all supported browsers.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 8
    CppServer

    CppServer

    Fast and low latency asynchronous socket server & client C++ library

    Ultra-fast and low latency asynchronous socket server & client C++ library with support TCP, SSL, UDP, HTTP, HTTPS, WebSocket protocols, and 10K connections problem solution. Cross platform (Linux, MacOS, Windows) Asynchronous communication. Supported CPU scalability designs: IO service per thread, thread pool. Supported transport protocols: TCP, SSL, UDP, UDP multicast. Supported Web protocols: HTTP, HTTPS, WebSocket, WebSocket secure. Supported Swagger OpenAPI iterative documentation. Supported message protocol based on Fast Binary Encoding.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 9
    Socket.IO-client Java

    Socket.IO-client Java

    A Socket.IO client library for Java

    This is the Socket.IO Client Library for Java, which is simply ported from the JavaScript client. The latest artifact is available on Maven Central. There are several ways to handle events that are transmitted between the server and the client. Add the listener function to the end of the listeners array for the event named eventName. Add a one-time listener function for the event named eventName. Remove the specified listener from the listener array for the event named eventName. Remove all listeners for the specific eventName. Remove all listeners (for any event). Besides emitting and listening to events, the Socket instance has a few attributes that may be of use in your application. Each new connection is assigned a random 20-characters identifier.
    Downloads: 2 This Week
    Last Update:
    See Project
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  • 10
    libhv

    libhv

    Network library for developing TCP/UDP/SSL/HTTP/WebSocket/MQTT client

    Like libevent, libev, and libuv, libhv provides event loop with non-blocking IO and timer, but simpler api and richer protocols. Cross-platform (Linux, Windows, MacOS, BSD, Solaris, Android, iOS) High-performance EventLoop (IO, timer, idle, custom) TCP/UDP client/server/proxy. TCP supports heartbeat, reconnect, upstream, MultiThread-safe write and close, etc. Built-in common unpacking modes (FixedLength, Delimiter, LengthField) RUDP support: WITH_KCP. SSL/TLS support: (via WITH_OPENSSL or WITH_GNUTLS or WITH_MBEDTLS) HTTP client/server (support https http1/x http2 grpc). HTTP supports static service, indexof service, proxy service, sync/async API handler. HTTP supports RESTful, router, middleware, keep-alive, chunked, SSE, etc. WebSocket client/server.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 11
    FACIL.IO

    FACIL.IO

    Your high performance web application C framework

    facil.io is an evented Network library written in C. facil.io provides high performance TCP/IP network services by using an evented design that was tested to provide an easy solution to the C10K problem. facil.io includes a mini-framework for Web Applications, with a fast HTTP / WebSocket server, integrated Pub/Sub, optional Redis connectivity, easy JSON handling, Mustache template rendering and more nifty tidbits. facil.io powers the HTTP/Websockets Ruby Iodine server and it can easily power your application as well. facil.io is easy to code with and aims at minimizing the developer's learning curve. In addition to detailed documentation and examples, the API is unified in style and the same types and API used for HTTP requests is used for JSON and Mustache rendering - so there's less to learn. facil.io should work on Linux / BSD / macOS (and possibly CYGWIN) and is continuously tested on both Linux and macOS.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 12
    N2O

    N2O

    Distributed WebSocket Application Server ISO 20922

    N2O is an embeddable message protocol loop library for WebSocket, HTTP, MQTT and TCP servers. It provides basic features, such as process management, virtual nodes ring for request processing, sessions, frame encoding, and unified API for external mq and caching services.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 13
    Sandstone

    Sandstone

    PHP microframework designed to build a RestApi

    PHP micro-framework designed to build a RestApi working together with a WebSocket server. Build a real-time RestApi!
    Downloads: 1 This Week
    Last Update:
    See Project
  • 14
    go-socket.io

    go-socket.io

    socket.io library for golang, a realtime application framework

    go-socket.io is the library implementation of Socket.IO in Golang, which is a real-time application framework. Current this library supports 1.4 version of the Socket.IO client. It supports room, namespaces and broadcast at now. This project is looking for contributors to help fix bugs and implement new features.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 15
    Cux Bomberman

    Cux Bomberman

    JAVA websocket implementation for a bomberman-like game

    This application uses JAVA and Glassfish server to provide an active and simple webSocket server for an online, multiplayer bomberman-like game. It only requires a running glassfish server to deploy the application on and a MySQL database server. After deployment and first run, anyone can access your webserver, register and play the game, using only a web browser that has built-in support for webSockets
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    gev

    gev

    Gev is a lightweight, fast non-blocking TCP network library

    Gev is a lightweight, fast non-blocking TCP network library / websocket server based on Reactor mode. Support custom protocols to quickly and easily build high-performance servers. Support custom protocols to quickly and easily build high-performance servers. High-performance event loop based on epoll and kqueue. Support multi-core and multi-threading. Dynamic expansion of read and write buffers implemented by Ring Buffer. Asynchronous read and write. SO_REUSEPORT port reuse support. Automatically clean up idle connections. Support WebSocket/Protobuf, custom protocols. Support for scheduled tasks and delayed tasks. High-performance web socket server.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    websocket for Go

    websocket for Go

    Minimal and idiomatic WebSocket library for Go

    websocket is a minimal and idiomatic WebSocket library for Go. Minimal and idiomatic API. First class context.Context support. Fully passes the WebSocket autobahn-testsuite. Single dependency. JSON and protobuf helpers in the wsjson and wspb subpackages. Zero alloc reads and writes. Concurrent writes. Close handshake. net.Conn wrapper. Ping pong API. RFC 7692 permessage-deflate compression. Compile to Wasm. Transparent message buffer reuse with wsjson and wspb subpackages. Gorilla writes directly to a net.Conn and so duplicates features of net/http.Client. Gorilla requires registering a pong callback before sending a Ping. Compare godoc of nhooyr.io/websocket with gorilla/websocket side by side. Will enable easy HTTP/2 support in the future.
    Downloads: 0 This Week
    Last Update:
    See Project
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