Top 20 NuGet sockets Packages

TcpClient for Windows Phone.
WireBus.NET is a loose wrapper around the .NET network I/O libraries. It allows arbitrary byte blobs to be sent down the wire rather than relying on byte-oriented connections. It also supports reply semantics.
Convenient and easy-to-use TCP library for .NET 4.5 with optional SSL encryption.
A fast, lightweight, and easy to use socket library for C#.
Implements a simple API for creating async socket clients and servers that can exchange raw bytes or binary messages. Imagined as a lightweight managed async zeromq replacement focusing on TCP sockets. Strives to be portable to Mono.
Portable completion port library for .Net
A .NET class library that abstracts away the details of asynchronous network programming. http://github.com/chutch1122/SimpleAsyncNetworking http://simpleasyncnet.cameronh.me/
Hazel Networking is a low-level networking library for C# providing connection orientated, message based communication via TCP, UDP and RUDP.
Reverse proxy in C#
Simple TCP and UDP messaging framework. The TCP Messaging functionality uses a two-way connection.
Simplified sockets for client/server comunication
Collection of low-level HTTP and FTP file transfer tools, this package for .Net 3.5 If you don't need to support .Net 3.5, use the normal Shift-It package
SharpMessaging is a fast and easy to use messaging layer on top of TCP. Faster than WCF and requires less configuration.
JustConnect is a C# Class-Library, which provides Easy-To-Use Socket-Features.
Easy TCP sockets with message framing for C#
A simple way to make a TCP server and contains methods relating to conversions
A fast efficient server/client structure for multiplayer games using opcodes
A library for peer-to-peer networking.
ASP.NET Core Kestrel server extension to enable synchronous response write operations safely.