sta/websocket-sharp

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

6075 stars · 1682 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

websocket-sharp is a C# library implementing the WebSocket protocol (RFC 6455) for both client and server, with support for per-message compression, secure connections, HTTP authentication, and proxy connections. It ships as a single assembly targeting .NET Framework 3.5+ and Mono, and is commonly used in Unity projects.

Use cases

• add websocket client to a C# application
• build a websocket server in .NET
• use websockets in Unity games
• connect through an HTTP proxy with websockets
• secure websocket connections with TLS in C#
• websocket client for Mono or .NET Framework 3.5

When to choose

• you need a pure C# websocket client or server without native dependencies
• you are building a Unity game that needs websocket networking
• you must target older .NET Framework versions or Mono

When to avoid

• you are on modern .NET and can use built-in System.Net.WebSockets or ASP.NET Core websockets
• you need a fully stable NuGet release (only prerelease packages are published)
• you need high-performance, scalable websocket server infrastructure

Facets

library · maturity maintenance

websocket http-server http-client web-development networking cross-platform dotnet cross-platform game-engine c-sharp rfc6455 unity websocket-client websocket-server mono real-time

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markdown · JSON · MCP: product_card(name="sta/websocket-sharp")