Prism is a framework for building loosely coupled, maintainable, and testable XAML applications across WPF, Avalonia, MAUI, Uno Platform, and WinUI.
The framework addresses the challenge of structuring complex XAML applications by providing implementations of established design patterns including MVVM, dependency injection, commands, and EventAggregator. Its core functionality is built on a shared .NET Standard 2.0 codebase that also targets .NET Framework and modern .NET versions, with platform-specific implementations layered on top to integrate these patterns deeply with each target platform's capabilities.
Prism suits teams building desktop or cross-platform applications who want architectural guidance and infrastructure to enforce separation of concerns. It works well for projects where maintainability and testability are priorities and where the overhead of a structured framework is justified by application complexity. The framework supports multiple platforms through separate, independently-developed releases rather than a single unified codebase, allowing each platform to evolve on its own timeline.
The project maintains active build pipelines for its core library and each platform-specific implementation. Documentation is centrally maintained and published to a dedicated website. The team has shifted support away from StackOverflow toward GitHub Discussions for community questions and GitHub Issues for bug reports and feature requests. Enterprise support is available through direct contact with the maintainers. The framework operates under a dual-licensing model offering both a free community license and commercial options, with commercial plus tiers providing additional support libraries and private channels for interaction with the team.
