causeway

Use Apache Causeway™ to rapidly develop domain-driven apps or modular monoliths in Java, on top of the Spring Boot platform. Write your business logic in entities, domain services or view models, and the framework dynamically generates a representation of that domain model as a webapp, GraphQL or RESTful API. For prototyping or production. Maintained by apache on GitHub, where it has earned 905 stars from the community.

It's actively developed around java, web-framework, domain-driven-design, and is a solid reference for anyone building with these tools.