Open Source WebSocket Libraries
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WebSocket Libraries
View 8803 business solutionsBrowse free open source WebSocket Libraries and projects below. Use the toggles on the left to filter open source WebSocket Libraries by OS, license, language, programming language, and project status.
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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. -
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Mongoose Embedded Web Server
An embedded web server
Mongoose is a networking library for C/C++. It implements event-driven non-blocking APIs for TCP, UDP, HTTP, WebSocket, MQTT. It is designed for connecting devices and bringing them online. On the market since 2004, used by vast number of open source and commercial products - it even runs on the International Space Station! Mongoose makes embedded network programming fast, robust, and easy. Cross-platform, works on Linux/UNIX, MacOS, Windows, Android, FreeRTOS, etc. Supported embedded architectures: ESP32, NRF52, STM32, NXP, and more. Built-in protocols: plain TCP/UDP, HTTP, MQTT, Websocket. SSL/TLS support: mbedTLS, OpenSSL or custom (via API). Used to solve a wide range of business needs, like implementing Web UI interface on devices, RESTful API services, telemetry data exchange, remote control for a product, remote software updates, remote monitoring, and others. -
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Vue-Socket.io
Socket.io implementation for Vuejs and Vuex
Vue-Socket.io is a Socket.IO integration library for Vue.js and Vuex applications. It allows Vue components to listen for real-time socket events through a clean, framework-friendly API. The project helps developers connect frontend applications to Socket.IO servers without manually wiring every event listener and lifecycle behavior. It also supports Vuex integration, making it easier to route socket events into centralized state management. Vue-Socket.io is especially useful for chat apps, dashboards, notifications, collaborative interfaces, live counters, and other real-time user experiences. Because the project is centered on Vue 2-era usage, modern Vue teams should evaluate compatibility before using it in a new application. -
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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. -
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GoWebSocket
golang supports million-connection distributed chat (IM) system
GoWebSocket is a Go-based distributed WebSocket chat and instant messaging system designed around very high connection counts. It demonstrates how to build a scalable IM architecture using Go, Gin, Nginx load balancing, horizontal deployment, and internal service communication. The project uses gRPC for communication between program components and is structured to support distributed real-time messaging rather than a single-process chat demo. Its documentation highlights single-machine million-connection goals, making performance and concurrency central to the design. gowebsocket is useful for developers studying large-scale WebSocket systems, chat backends, connection management, and Go network programming. It is best treated as a technical reference and learning project for distributed real-time architecture. -
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WebSocket ++
C++ websocket client/server library
WebSocket++'s goal is to provide a flexible set of tools for building a wide variety of WebSocket based applications wrapped by low or zero overhead abstractions. It is not opinionated. If something can be practically replacable (with low overhead) based on the user's preference then it is. It accomplishes this via a policy based design built using C++ template metaprogramming. WebSocket++ is a cross platform open source (BSD license) header only C++ library that implements RFC6455 (The WebSocket Protocol) and RFC7692 (Compression Extensions for WebSocket). It allows integrating WebSocket client and server functionality into C++ programs. In its most common configuration full featured network I/O is provided by the Asio Networking Library. Bundled config packages provide sane defaults so most users can get started quickly. As they understand their solution better and want to optimize, the default components can be reconfigured or replaced entirely and transparently. -
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Autobahn|Python
WebSocket and WAMP in Python for Twisted and asyncio
Autobahn Python is a networking library for building Python applications that use WebSocket and WAMP. It supports both Twisted and asyncio, giving developers flexibility depending on their preferred Python event framework. The WebSocket layer enables bidirectional real-time messaging between clients and servers. The WAMP layer adds routed remote procedure calls and publish-subscribe messaging for distributed applications. Autobahn Python is useful for dashboards, IoT systems, collaborative apps, backend services, messaging platforms, and applications that need real-time communication across components. It works especially well with a WAMP router such as Crossbar.io when building routed multi-service systems. -
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GWS
Simple, fast, reliable websocket server & client
GWS is a high-performance WebSocket library for Go that provides both server and client capabilities. It is designed for high-concurrency use cases such as API gateways, chat systems, reverse proxies, online games, real-time streaming, and push or subscription services. The library exposes a minimal event-driven API, allowing developers to build WebSocket applications with relatively little code. It supports standard TCP usage as well as WebSocket operation over KCP and Unix domain sockets. GWS also includes practical features for connection handling, compression, heartbeat management, UTF-8 validation, and scalable read or write loops. It is a strong fit for Go developers who need a lightweight but feature-complete WebSocket foundation for real-time applications. -
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IXWebSocket
websocket and http client and server library, with TLS support
IXWebSocket is a C++ library for WebSocket client and server development. It has minimal dependencies (no boost), is very simple to use and support everything you'll likely need for websocket dev (SSL, deflate compression, compiles on most platforms, etc...). HTTP client and server code is also available, but it hasn't received as much testing. It is been used on big mobile video game titles sending and receiving tons of messages since 2017 (iOS and Android). It was tested on macOS, iOS, Linux, Android, Windows and FreeBSD. Two important design goals are simplicity and correctness. -
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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. -
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SuperSocket
Extensible socket server application framework for .NET
SuperSocket is a high-performance, extensible socket server framework for .NET applications. It provides a structured foundation for building custom network communication servers without manually implementing every low-level socket concern. The framework supports multiple protocols, including TCP, UDP, and WebSocket, and gives developers a modular architecture for protocol parsing, session handling, command processing, and server hosting. It is suitable for chat servers, game servers, IoT gateways, telemetry services, industrial systems, and other real-time network applications. SuperSocket is designed to be flexible enough for custom binary or text protocols while still offering reusable abstractions for common server patterns. It is most useful for .NET teams that need robust networking infrastructure with room for domain-specific protocol logic. -
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tokio-tungstenite
Future-based Tungstenite for Tokio
tokio-tungstenite is a Rust library that connects the Tungstenite WebSocket implementation with the Tokio asynchronous runtime. It lets developers build non-blocking WebSocket clients and servers using Tokio’s async networking model. The crate wraps asynchronous TCP streams and upgrades them into WebSocket streams that integrate naturally with Rust futures and async tasks. It is useful for real-time services, streaming applications, chat systems, gateways, backend infrastructure, and any Rust project that needs WebSocket communication without blocking threads. Because it builds on Tungstenite, it inherits a standards-focused WebSocket protocol foundation while adding Tokio compatibility. It is a practical choice for Rust developers who need efficient, event-driven WebSocket networking. -
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NestJS-Websocket
Websocket Client for NestJS based on ws
Websocket Client for NestJS based on ws. -
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NetCoreServer
Ultra fast and low latency asynchronous socket server & client C#
Ultra fast and low latency asynchronous socket server & client C# .NET Core library with support TCP, SSL, UDP, Unix Domain Socket, HTTP, HTTPS, WebSocket protocols and 10K connections problem solution. Has an integration with high-level message protocol based on Fast Binary Encoding. Cross-platform (Linux, MacOS, Windows) Asynchronous communication. Supported transport protocols: TCP, SSL, UDP, UDP multicast, Unix Domain Socket. Supported Web protocols: HTTP, HTTPS, WebSocket, WebSocket secure. Supported Swagger OpenAPI iterative documentation. Supported message protocol based on Fast Binary Encoding. -
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SockJS-client
WebSocket emulation and Javascript client
SockJS is a browser JavaScript library that provides a WebSocket-like object. SockJS gives you a coherent, cross-browser, Javascript API which creates a low latency, full duplex, cross-domain communication channel between the browser and the web server. Under the hood SockJS tries to use native WebSockets first. If that fails it can use a variety of browser-specific transport protocols and presents them through WebSocket-like abstractions. SockJS is intended to work for all modern browsers and in environments which don't support the WebSocket protocol, for example, behind restrictive corporate proxies. SockJS-client does require a server counterpart, such as SockJS-node, which is a SockJS server for Node.js. The API should follow HTML5 Websockets API as closely as possible. All the transports must support cross domain connections out of the box. It's possible and recommended to host a SockJS server on a different server than your main web site. -
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arduinoWebSockets
arduinoWebSockets
A WebSocket Server and Client for Arduino based on RFC6455. -
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A simple WebSocket server
A simple WebSocket server
A simple WebSocket server. -
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BeetleX
high performance dotnet core socket tcp communication components
High-performance dotnet core socket tcp communication components, support TLS, HTTP, HTTPS, WebSocket, RPC, Redis protocols, custom protocols and 1M connections problem solution. -
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DNWebSocket
WebSocket(RFC-6455) library written using Swift
Object-Oriented, Swift-style WebSocket Library (RFC 6455) for Swift-compatible Platforms. -
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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. -
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Gorilla WebSocket
Fast, well-tested and widely used WebSocket implementation for Go
Gorilla WebSocket is a Go implementation of the WebSocket protocol. The Gorilla WebSocket package provides a complete and tested implementation of the WebSocket protocol. The package API is stable. An application can also send and receive messages using the io.WriteCloser and io.Reader interfaces. To send a message, call the connection NextWriter method to get an io.WriteCloser, write the message to the writer and close the writer when done. To receive a message, call the connection NextReader method to get an io.Reader and read until io.EOF is returned. The WebSocket protocol distinguishes between text and binary data messages. Text messages are interpreted as UTF-8 encoded text. The interpretation of binary messages is left to the application. The Gorilla WebSocket package passes the server tests in the Autobahn Test Suite using the application in the examples/autobahn subdirectory. -
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Karellen Gevent Websocket Library
Karellen Gevent Websocket Library
This is a Karellen fork of gevent-websocket. The goal of this fork is to maintain the project to support Python 3.3, 3.4 and 3.5+ as well as latest WS standards errata. -
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Laravel WebSockets
Websockets for Laravel
Laravel WebSockets is a package for Laravel 5.7 and up that will get your application started with WebSockets in no time. It has a drop-in Pusher API replacement, a debug dashboard, real-time statistics and even allows you to create custom WebSocket controllers. -
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Melody
Minimalist websocket framework for Go
Melody is a minimalist WebSocket framework for Go that wraps the standard WebSocket workflow in a simple, developer-friendly API. It is designed to make real-time server features easier to build without requiring a large framework or complex setup. Developers can use it for chat systems, live notifications, dashboards, multiplayer coordination, collaborative tools, and other bidirectional communication features. Melody provides connection lifecycle hooks, message handlers, broadcasting, session management, and grouped communication patterns. It is built to feel familiar to Go developers and can be integrated into existing HTTP applications. The project is especially useful when a team needs straightforward WebSocket behavior without building connection handling and broadcast logic from scratch. -
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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.
Open Source WebSocket Libraries Guide
Getting started with using open source websocket libraries is a great way to create real-time applications quickly. Here are the steps to get up and running:
- Choose Your Library: Before you can get started, you need to decide which websocket library to use. There are many open source libraries available for different programming languages such as HTML5 WebSocket, Node.js, Java Script, Photon, etc. Consider the features offered by each library and choose the one that best suits your project needs.
- Install the Library: Once you’ve chosen your library, it’s time to install it onto your system or computer. Most of these libraries come in packages that include documentation or guides on installation procedures so make sure to read through them before proceeding with installation.
- Connecting Clients and Servers: Websockets require a client–server connection between two endpoints (tools) in order for data transfer to be successful. Before you can start sending data back & forth between two computers or devices, make sure both ends of the connection are properly initialized by writing code according to guidelines provided by your chosen library/framework package.
- Sending & Receiving Data: Once connected, you can start exchanging messages between clients and servers using various protocols (e.g., TCP/IP). Make sure to research which protocol works best for your application and how it should be used correctly before continuing any further steps towards development.
- Developing Applications: Now that everything is set up properly, it’s time for the fun part - developing web applications. With websockets being an enabler of real-time communication between browsers & servers online, developers have endless opportunities when crafting their projects using this technology. Just remember to keep in mind all security concerns related with data transmissions across networks while creating apps with this technology.
If you’ve followed these 5 steps, then you should be all set up and ready to start building your own web applications using open source websocket libraries. Good luck.
What Features Do Open Source WebSocket Libraries Provide?
- Cross-Browser Compatibility: Open source websocket libraries are designed to work with a variety of web browsers, ensuring that users can access the same features regardless of their browser type or version.
- Secure Connections: Many open source websocket libraries provide secure connections in order to protect both the client and server from malicious actors or data breaches. This often includes TLS/SSL encryption as well as authentication protocols such as OAuth.
- Easy Integration: Websockets are often easy to integrate into existing systems due to their lightweight nature. This allows developers to quickly connect the client and server, allowing for rapid development cycles.
- Low Latency: The low latency provided by open source websocket libraries is a key feature which makes them popular for real time applications such as gaming. This ensures a fast and reliable connection between the two endpoints at all times.
- Protocol Support: Most open source websocket libraries support multiple protocols such as HTTP, WebSockets, UDP, and more. This means developers can easily leverage these protocols for different use cases without having to switch services or invest in new infrastructure.
- High Reliability: Another key feature of these libraries is high reliability. This ensures that data is sent quickly and accurately, reducing errors or latency issues which can affect applications such as gaming or streaming.
- Flexible Design: Open source websocket libraries are designed to be flexible, allowing developers to tailor the service to their specific needs. This includes features such as custom protocols, message queue support, and more.
Different Types of Open Source WebSocket Libraries
- Socket.io: Socket.io is a library that enables real-time, bidirectional and event-based communication between the browser and server. It works on every platform, browser or device, focusing equally on reliability and speed.
- Autobahn: Autobahn is an open source library for building WebSocket applications in Python, JavaScript and other languages. It provides features like automatic reconnection handling, cross-browser support and message routing to ease the task of developing real-time application protocols over raw websockets.
- WAMP: WAMP (Web Application Messaging Protocol) is an open source messaging protocol that runs on top of WebSockets for publishing/subscribing messages across multiple client types via RPCs (remote procedure calls). It provides an easier way to build distributed applications using JSON over websockets, without having to worry about security, transport layers etc., allowing developers to focus more on their application logic rather than networking code.
- Ratchet: Ratchet is an open source PHP library for working with the WebSocket protocol. It provides objects for dealing with clients, giving developers the ability to write applications that require low latency data transmission between browsers and servers quickly and easily.
- Faye: Faye is an open source messaging system based on Publish/Subscribe pattern over websockets. It enables easy single page application development by providing a simple asynchronous publisher/subscriber model which can be used independently or as part of a larger system such as NodeJS or Ruby On Rails framework.
- Primus: Primus is an open source library that abstracts realtime server communication over different transports like WebSocket, Server Sent Events and more. It allows developers to write their application logic in a unified way regardless of the transport layer being used underneath. It provides an easy and efficient way to enable asynchronous server communication.
What Are the Advantages Provided by Open Source WebSocket Libraries?
- Improved Security: Open source websocket libraries provide enhanced security features. This allows developers to better protect their applications from malicious attacks, data breaches, and other potential threats. Additionally, these libraries offer a wide range of authentication methods to ensure secure connections between client and server applications.
- Increased Performance: By using an open source websocket library, developers can create applications that are faster and more efficient than traditional web-based communication protocols. These libraries are able to handle higher volumes of data requests with less latency, enabling users to enjoy a smoother user experience.
- Reduced Development Time: Websockets eliminate the need for multiple threads when developing applications in languages like JavaScript or Java. With websockets, developers no longer have to worry about writing code that will support multiple processes or threads at once; instead they can focus on simply creating a single thread that creates a persistent connection with the server side application instead of establishing one-time connections each time data is required. This reduces development time significantly and ensures optimal performance in production environments.
- Robust Functionality: Open source websocket libraries make it easier for developers to create robust functionality within their applications by providing them with access to fully featured APIs and libraries that allow for the easy integration of advanced capabilities such as real-time messaging, media streaming, file sharing, etc.
- Community Support: The open source nature of these websocket libraries makes them extremely popular among developers due to its community-driven support structure which provides access to forums where programmers can seek help from experienced peers in order to troubleshoot any issues they may be experiencing during development. Additionally, open source websocket libraries offer a wide range of tutorials and documentation that can help developers understand the basics of websockets and how to effectively implement them into their applications.
Who Uses Open Source WebSocket Libraries?
- Developers: These are software engineers who use open source websocket libraries to create applications that interact with websockets.
- System Administrators: These professionals use open source websocket libraries to build and maintain networks of connected devices.
- Network Architects: These professionals are responsible for designing the infrastructure needed to enable websockets to run properly.
- Web Designers & Front-End Developers: These individuals use open source websocket libraries while building websites and web applications in order to ensure that websites seamlessly connect with web sockets.
- Embedded Device Makers: These makers create products such as smart home controllers, robots, drones and other connected devices that rely on websockets for communication.
- IoT Programmers: These individuals use open source websocket libraries in order to program Internet of Things (IoT) devices and machines.
- Data Scientists & Analysts: Data scientists and analysts make use of open source websocket libraries when collecting data from a variety of sources in order to identify trends or correlations between different pieces of data over time.
- Security Professionals: These professionals use open source websocket libraries to ensure the safety and security of web applications and networks that use websockets.
How Much Do Open Source WebSocket Libraries Cost?
Open source websocket libraries are completely free. This means that anybody can use them without having to spend any money. Websocket libraries can help developers to quickly and easily create applications with real-time communication capabilities. Many of these libraries are actively maintained, so you don’t have to worry about the code becoming outdated or insecure. Additionally, open source websocket libraries often come with well-documented APIs, which makes it easier for developers to quickly and accurately implement the web socket functionality into their applications. So, in conclusion, open source websocket libraries cost nothing – they’re totally free.
What Software Can Integrate With Open Source WebSocket Libraries?
Open source websocket libraries can integrate with a variety of types of software. For example, web browser applications, cloud services, and real-time data exchange services are all compatible with open source websocket libraries. Many messaging and communication applications can be adapted to use websockets as well as content management systems and virtual machines. Other software types that can work with open source websocket libraries include databases, ecommerce platforms, machine learning frameworks, and game engines. Additionally, mobile apps built on popular operating systems such as Android or iOS can be integrated with open source websocket libraries.
What Are the Trends Relating to Open Source WebSocket Libraries?
- Websockets are increasingly being used for real-time applications due to their low latency, bi-directional communication capabilities.
- The most popular open source websocket libraries are Socket.IO and WebSocket++, both of which provide an easy and extensible way to communicate with other systems via websockets.
- Recently, there has been a trend towards using open source components to build web applications, and this is no different for websocket libraries.
- Developers have been drawn to open source websocket libraries because of their ease of use; developers can quickly spin up a connection with minimal code.
- Open source websocket libraries also give developers access to extensive documentation, making it easier and quicker to find answers when they’re stuck troubleshooting a problem.
- Additionally, the cost savings associated with open source solutions has made them appealing for developers on a budget.
- Finally, due to the growing popularity of container orchestration technologies such as Kubernetes, open source websocket libraries can be deployed over multiple nodes in a distributed system architecture more easily than proprietary solutions.
How To Get Started With Open Source WebSocket Libraries
Users can get started with using open source websocket libraries by first selecting the library that works best for their needs. There are many libraries available, such as Java, JavaScript, Python, and Ruby. Once the library has been selected, the user will need to download it from the library's official website. After downloading the library files to their computer, they should unzip them into a folder they can easily locate.
Next, they will need to install any required dependencies and configure it correctly. The installation and configuration process may vary depending on which operating system is running on their computer or server. Depending on the complexity of their application's websocket requirements, users may also want to set up an authentication strategy and data validation protocol before connecting it to a websocket server.
After all of these steps have been completed successfully, users can start writing code that interacts with websockets. This could involve writing client-side scripts that use JavaScript to communicate with a server via websockets, or building out a server-side application in Java or Python that listens for incoming connections over websockets and handles incoming messages accordingly.
Overall, getting started with using open source websocket libraries is relatively straightforward once users select and download the right library for their particular environment and setup any required dependencies correctly. With some familiarity of coding in whatever language they are working with (JavaScript, Java, Python, etc.), users should be able to have an application up and running with features powered by web sockets in no time.
