pereiren/dotnet-template-onion - Onion Architecture with .NET 5/.NET Core and CQRS/Event Sourcing following a DDD approach
iammukeshm/OnionArchitecture - The onion architecture, introduced by Jeffrey Palermo, overcomes the issues of the layered architecture with great ease. With Onion Architecture, the game-changer is that the Domain Layer (Entities and Validation Rules that are common to the business case ) is at the Core of the Entire Application. This means higher flexibility and lesser coupling