https://bubble.io/ - for non-developers, good for prototyping and simple apps but not scalable

https://remaketheweb.com/ - seems cool, full-stack framework, not totally flexible but might be interesting for simpler apps

We are working on an open-source project for developers that would be both easy to use but also flexible and scalable. You can see it here: https://wasp-lang.dev/ - it's still a work in progress, but would be cool to get your feedback!