Top 20 NuGet membership Packages

A System.Web.Security.RoleProvider that maps to existing Active Directory groups. See: http://galacticapi.github.io/astrolabe.html#SimpleADRoleProvider for RoleProvider configuration details.
AspNetCore ElasticSearch Identity Provider
ASP.NET Core Identity Extension using Mongo DB as storage
ASP.NET Core Identity provider based on Neo4j
ASP.NET Identity providers that use NHibernate and Sharp Architecture.
Site Extension to perform maintenance on ASP.NET User Authentication, Authorization, and Membership.
ASP.NET Core Identity provider that uses Dapper.
A MongoDB provider for ASP.NET Core 2 Identity framework. to netcore2
Core interfaces for .NET Identity.
A MongoDB provider for ASP.NET Core 2 Identity framework adjusted for OnePipe.
Provides multi-tenant support for ASP.NET Core Identity.
Provides multi-tenant support for ASP.NET Core Identity.
A .NET implemention of SWIM
A Cosmos DB / DocumentDB Storage Provider for ASP.NET Core Identity.
A Cosmos storage provider for ASP.NET Core Identity.
ASP.NET Core Identity implementation for LiteDB database engine.
A Cosmos storage provider for ASP.NET Core Identity.
Provides Front-End registration and account-management services for Umbraco Members. Version 2.0.1 targets Umbraco 7.3 and has been re-written to be more flexible allowing for profile registration for multiple Member Types.
EFMembership gives you Membership Provider for System.Security.Membership or WebMatrix. With supporting OAuthMembership for external login like (Facebook, Twitter, Yahoo, Google, ...). You can use your custom model class or Builtin exist models like my Default models or Microsoft members...
ASP.NET Membership and Role Provider that uses SQL Server Compact 4.0 as data store. Notice: The version 2 data store schema is not backwards compatible with version 1, but compatible with the SQL Server ASP.NET 4.0 schema.