Fabulous

Inspired by SwiftUI, it centralizes UI definition in one place, making it easier to reason about and maintain, as demonstrated in the counter app example where UI is defined in a single view function.

Uses F# records and discriminated unions to model state explicitly, preventing invalid states and crashes, with clear update functions that handle transitions sequentially.

The MVU architecture allows for straightforward unit testing of every possible state transition, as shown in the test example where state updates are verified with simple equality checks.

Leverages the mature .NET framework, enabling the use of third-party packages and libraries across platforms, as noted in the README's emphasis on .NET's broad support.