Katana
Katana is a lightweight, open-source dependency injection (DI) framework for .NET applications, designed to simplify object composition and improve testability. It provides a fluent API for registering and resolving dependencies, supporting constructor injection and lifecycle management. Originally developed by Microsoft as part of the Prism library, it is now maintained by the community for use in various .NET projects.
Developers should learn Katana when building modular, testable .NET applications, especially in scenarios like enterprise software or large-scale web services where loose coupling is critical. It is particularly useful in projects using the Prism framework for WPF or Xamarin, as it integrates seamlessly to manage view models and services. Use Katana to reduce boilerplate code and enhance maintainability by decoupling components through dependency injection.