Top 20 NuGet membership Packages

A MongoDB provider for ASP.NET Core 2 Identity framework. Upgrade https://github.com/g0t4/aspnet-identity-mongo / https://www.nuget.org/packages/Microsoft.AspNetCore.Identity.MongoDB/ to netcore2
A Cosmos DB / DocumentDB Storage Provider for ASP.NET Core Identity
.NET Identity providers that use Entity Framework.
Claims-based user account and identity management framework
ASP.NET Core Identity provider based on Neo4j
Core interfaces for .NET Identity.
Enables SimpleMembership API (from ASP.NET WebPages) to be used with ASP.NET MVC3. This allows you to use the WebSecurity helper found in the WebMatrix.WebData namespace. See http://ander.ly/SimpleMembershipMvc3 for "readme" instructions.
Claims-based user account and identity management framework
Implementations of ASP.NET Core Identity IPasswordValidators that verify the provided password is not one of the most common passwords. Inspired by Discource and https://blog.codinghorror.com/password-rules-are-bullshit/
A MongoDB provider for ASP.NET Core 2 Identity framework. Upgrade https://github.com/g0t4/aspnet-identity-mongo to netcore2
Shared test suite for Asp.Net Identity Core store implementations. This package was built from the source code at https://github.com/aspnet/Identity/tree/99f352a92f98af1059c87de07556719f1a22ce39
WisdomCloud Core Identity is the membership system for building ASP.NET Core web applications with Generics, including membership, login, and user data. ASP.NET Core Identity allows you to add login features to your application and makes it easy to customize data about the logged in user.
Barricade is a lightweight membership system. An ASP.NET Web API security library that implements OAuth 2 authentication and claim based authorizations.
ASP.NET Core Identity provider that uses Dapper.
Owin implementation for ASP.NET Identity.
Adds multi-tenant support for ASP.NET Identity using EntityFramework. The extensibility required to support multi-tenancy is not possible with the 1.0.0 release of Microsoft.AspNet.Identity.EntityFramework, but is available in the 2.0 release.
Membership and Roleprovider for C1
The starter kit provides the Asp.Net MVC controllers, models, and views needed to administer users & roles. This package contains classes needed by the MvcMembership.Mvc package to provide a testable interface to ASP.Net's MembershipProvider and RoleProvider features.
Fully asynchronous, new and sweet ASP.NET Identity implementation for RavenDB
Distribution client library