I wouldn&#x27;t say it&#x27;s an alternative any more than Haskell is an alternative to Java. It&#x27;s a different language and ecosystem.<p>That said, F# is pretty nice. It&#x27;s opt-in laziness for .NET compatibility but laziness is pervasive. There&#x27;s no forced purity though. On the plus side it&#x27;s easy to interact with anything that has .NET bindings.