#1 Open Source Unity Networking Library

SimpleUDP - UDP library for C#

🇳 🇪 🇹 🇱 🇾 - Cross-Platform and Multi-Protocol C# Socket Library. (Extremely fast and easy)

测试当前网络的 NAT 类型（STUN）

General purpose virtual actor framework for peer-to-peer microservices or in-process communication within the same app with possible extension to blockchains.

TouchSocket是.Net(包括 C# 、VB.Net、F#)的一个整合性的、超轻量级的网络通信框架。包含了 tcp、udp、ssl、http、websocket、rpc、jsonrpc、webapi、xmlrpc等一系列的通信模块。一键式解决 TCP 黏分包问题，udp大数据包分片组合问题等。使用协议模板，可快速实现「固定包头」、「固定长度」、「区间字符」等一系列的数据报文解析。

A high extensible hardware communication platform using C#

Pure C# HighLevel API for multiplayer games

MikroTik Neighbor Discovery Protocol Tools

Standalone Windows app supporting Modbus RTU, TCP, UDP, RTUoverTCP, RTUoverUDP, ASCIIoverRTU, ASCIIoverTCP and ASCIIoverUDP protocols. It is designed to allow running multiple instances of the app at the same time, just use a different port. Also included are Linux and Mac OS X Mono versions.

Free Modbus Slave Simulator in the form of a standalone Windows app supporting Modbus RTU, TCP, UDP and ASCIIoverRTU protocols. The simulator does allow setting values before the connection is established as well as running multiple instances of the app at the same time. Also included are Linux and Mac OS X Mono versions.

SuperSocket is a light weight, cross platform and extensible socket server application framework.

Easy to use high performance Network library for Unity 3d

Server-client application for creating an encrypted UDP tunnel between two computers

A Serilog sink sending UDP packages over the network.

Lite reliable UDP library for Mono and .NET

Lidgren Network Library (Space Wizards edition)

Sample application of Serilog.Sinks.Udp producing log events in .NET Core.

Sample application of Serilog.Sinks.Udp producing log events in .NET Framework.

C# asynchronous Multi-Core server/client socket library based on IOCP - EAP SocketAsyncEventArgs supporting TCP/UDP