Top 20 NuGet standard Packages

Twitch C# library for accessing Twitch chat and whispers with events, Twitch API with both authenticated and unauthenticated calls, and PubSub with events.
Helper classes for creating and managing application windows and user input.
ImageSharp integration for Veldrid. Provides functionality for loading GPU Textures with ImageSharp.
Implements a simple facade to store data into a OpenTSDB database
SoftwareCraft.Maybe represents the OOP implementation of a functional concept. Instead of returning null, return a Maybe, and the code will be much cleaner and the intent much clearer.
A bunch of helpful extensions that should really be in the standard library
MySql Sync Provider. Able to be Server and Client. Use with Dotmim.Sync.Core Actually MySql Sync Provider requires ADO.NET Provider MySql.Data, which IS NOT .Net Standard 2.0 compatible. So you must use it on classic .NET Framework ( > 4.5)
Dotmim Sync core assembly. Manage a sync process beetween two relational databases provider. Can't be used alone. Choose a server and a client provider such as Dotmim.Sync.SqlServerProvider or Dotmim.Sync.SqliteProvider
Miscellaneous utility functions useful for Veldrid.
This package, built on top of the original Active Directory Authentication Library (ADAL), makes extremely easy to authenticate users inside your Xamarin projects. You only need 1 line of code!
Veldrid integration for the SPIRV-Cross native library. Contains functionality to cross-compile SPIR-V bytecode into HLSL, GLSL, ESSL, and MSL shaders for use with Veldrid.
A MonoGame library that emulates old-school console and command prompt style graphics. Targets .NET Standard 2.0
A superset of the popular JSON format. Json+ is designed for ease of editing and is capable of variable substitution.
A F# project for creating placeholder images -- a handy tool when making quick prototypes app's and sites.
Utilities to save you some time when using MVVM pattern.
Rebuld of (Novell.Directory.Ldap.NETStandard) for net standard 1.3 with signing Microsoft.Extensions.Logging.* packages Assemly has strong key and can be placed in GAC .NET Standard 1.3 LDAP signed client library. Works with any LDAP server (including Microsoft Active Directory - AD)
Cosmos base library
https://github.com/Dixin/EnterpriseLibrary.TransientFaultHandling.Core
SoftwareCraft.Result represents the OOP implementation of a functional concept. Instead of throwing an exception, return a Result, and the code will be much cleaner and the intent much clearer.
Models to use Identity API on MilNet Services