Entity Framework Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations. EF Core works with SQL Server, Azure SQL Database, SQLite, Azure Cosmos DB, MySQL, PostgreSQL, and other databases through a provider plugin API.
Commonly...
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NHibernate is a mature, open source object-relational mapper for the .NET framework. It is actively developed, fully featured and used in thousands of successful projects.
Entity Framework Core Tools for the .NET Command-Line Interface.
Enables these commonly used dotnet-ef commands:
dotnet ef migrations add
dotnet ef migrations list
dotnet ef migrations script
dotnet ef dbcontext info
dotnet ef dbcontext scaffold
dotnet ef database drop
dotnet ef database update