Review of BlackHole.Core.ORM powered by the Slant community.
Free and open-source ORM.
"The Fastest, Easiest and Most Complete ORM for .NET Core" according to the developer.
Supports SQL Server, MySql, Postgres, Oracle and SqLite.
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Pros
Pro Direct mapping to DTOs
Pro Can perform Joins using C#
Pro Can parse an existing database
It generates entities using its Cli