ReactiveUI

A composable, cross-platform MVVM framework for .NET inspired by functional reactive programming. It moves mutable state out of the user interface, keeps each feature's logic in one readable place, and makes applications easier to test. Supports WPF, WinForms, WinUI, .NET MAUI, Avalonia, Uno Platform, Blazor and Android.

A source generator that produces Splat dependency injection registrations at compile time. Constructor and property injection are resolved without runtime reflection, with analyzers and code fixes and full native AOT support.

An asynchronous, persistent key-value store for .NET desktop and mobile applications, backed by SQLite. Suited to both durable data such as user settings and cached data that expires, with optional encryption and System.Text.Json serialization.

Roslyn source generators that write ReactiveUI boilerplate at compile time. Attributes such as [Reactive], [ObservableAsProperty], [ReactiveCommand] and [IViewFor] produce reactive properties, commands and view bindings without reflection or IL weaving.

Cross-platform building blocks for .NET applications. Provides service location and dependency resolution, logging, platform-neutral images, colours and geometry, and unit test and design mode detection.

A set of high-performance, memory-efficient Reactive Extensions (Rx) for SignalR client applications. It enables idiomatic, composable, and observable-based programming for SignalR events, streaming, and connection management.

Shared GitHub Actions workflows and composite actions used across the ReactiveUI organisation. Covers building, testing, code coverage, package signing and releases so every repository follows the same pipeline.

A compact, allocation-conscious reactive programming library for .NET built on IObservable<T>. It covers the common Rx operators, scheduling and state without a runtime dependency on System.Reactive, and is designed for trimming and native AOT.

ReactiveUI integration for Avalonia UI. Provides reactive views, activation, routing and scheduler support for building cross-platform MVVM applications on Windows, macOS and Linux, with optional dependency injection integrations.

The automatic type-safe REST library for .NET. Refit turns a REST API into a C# interface and generates the HttpClient implementation, with support for HttpClientFactory, pluggable serializers and a testing package.