Top 20 NuGet unity Packages

Tool for Unity NuGet packages
Highlevel networking library for Unity
AppSettings.Unity is an extension to parse AppSettings in app.config( web.config) section into specified DOM.
Unity4 support for Radical Framework
Small C# app that packs all the png from a folder int a set of square atlas textures.
A set of utility classes and components useful to any Unity project.
Simple, forward-compatible references to ANY Unity assembly on Mac or Windows.
Utility library for WPF projects with Prism
A simple implementation of Unity's Coroutines to be used for any C# project