I know you didn't list Python, but Django works very well. Bit of a learning curve though. Flask is a microframework (also Python), with emphasis on the micro.

I know you didn't list Python, but Django works very well. Bit of a learning curve though. Flask is a microframework (also Python), with emphasis on the micro. Django makes some trade-offs that might make it seem like you're less productive. Maybe it's true, but Django apps are very maintainable in my experience.