I recently started work on AsyncPoco , the fully asynchronous plug of the popular PetaPoco micro-ORM. It still needs some testing and some related docs / examples, but does not yet support PostgreSQL. UPDATE: AsyncPoco now has basic documentation and samples, and PostgreSQL is now supported!
Anyway, you asked about other micro-ORM.NET supporting async operations, so I thought I would call it one of them to keep an eye on it.
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