C# WebSocket Libraries
For a C# library for implementing WebSockets, the strongest matches are signalr/signalr (SignalR is a high-performance real-time framework that abstracts WebSocket), dotnet/aspnetcore (This is the official framework that provides the native) and sta/websocket-sharp (This library provides a robust, protocol-compliant implementation for building). statianzo/fleck is also worth a look. Each is ranked by relevance to your query, popularity and recent activity.
We curate open-source GitHub repositories matching “best c sharp websocket libraries”. Results are ranked by relevance to your query — pick filters below to narrow, or refine with AI.
C# WebSocket Libraries
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- signalr/signalr
SignalR/SignalR
9,389View on GitHubSignalR is a .NET real-time web framework designed to push content from a server to connected browser and non-browser clients. It provides a server-to-client push framework and a remote procedure call system that enables bidirectional communication over persistent connections. The library utilizes WebSockets to establish full-duplex connections and includes a transport-layer abstraction to manage different network protocols. It employs client-side connection negotiation to determine the best available communication protocol during the initial handshake. The system manages persistent connecti
SignalR is a high-performance real-time framework that abstracts WebSocket communication to provide robust bidirectional messaging and seamless ASP.NET Core integration, making it a primary choice for .NET developers needing persistent connections.
C#Data Framing - dotnet/aspnetcore
dotnet/aspnetcore
38,143View on GitHubThis project is a comprehensive server-side web framework designed for building scalable web applications and services. It provides a structured, component-based architecture that integrates a dependency injection container to manage service lifecycles and promote loose coupling across the software stack. The framework enables the creation of interactive client-side interfaces through a component-based model that synchronizes state directly with the browser. The platform distinguishes itself through a highly configurable middleware-based request pipeline and an attribute-based routing engine
This is the official framework that provides the native, high-performance WebSocket implementation for .NET, including the required asynchronous I/O and ASP.NET Core integration.
C#Component FrameworksDependency Injection ContainersWeb Application Frameworks - sta/websocket-sharp
sta/websocket-sharp
6,067View on GitHubwebsocket-sharp is a C# library implementation of the WebSocket protocol used for building bidirectional client and server applications. It enables real-time data exchange between endpoints via persistent connections. The library provides specialized networking capabilities, including SSL encrypted networking for secure transport and certificate validation. It also features HTTP proxy tunneling to route traffic through intermediary servers using basic or digest authentication. The project covers a broad range of capabilities, including the implementation of both WebSocket clients and servers
This library provides a robust, protocol-compliant implementation for building WebSocket clients and servers in C#, though it lacks native integration with the modern ASP.NET Core middleware pipeline.
C#Real-Time Web CommunicationWebSocket Clients and ServersBinary Protocols - statianzo/fleck
statianzo/Fleck
2,436View on GitHubC# Websocket Implementation
Fleck is a lightweight, standalone WebSocket server implementation for C# that provides a straightforward way to handle WebSocket connections, though it lacks the native ASP.NET Core middleware integration found in more comprehensive frameworks.
C#Web Frameworks
