Mapster

The README benchmarks show Mapster can be up to 12x faster than AutoMapper and uses only one-third of the memory, making it ideal for data-heavy .NET applications.

With Mapster.Tool, developers automatically generate DTO models and explicit mapper classes at build time, ensuring type safety and enabling raw performance gains.

The diagnostics package allows debugging generated mapping code directly in the IDE, letting developers inspect values like handwritten code—a unique feature among mappers.

Queryable extensions like ProjectToType enable efficient mapping of Entity Framework queries without manual Select expressions, reducing boilerplate and improving query performance.

Mapster implements the IMapper interface, so replacing AutoMapper in dependency injection setups requires minimal code changes, as highlighted in the basic usage section.