OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

FizzBuzz Enterprise Edition is a no-nonsense implementation of FizzBuzz made by serious businessmen for serious business purposes.

Smithy is a protocol-agnostic interface definition language and set of tools for generating clients, servers, and documentation for any programming language.

Mixin is a trait/mixin and bytecode weaving framework for Java using ASM

A fast Java JSON schema validator that supports draft V4, V6, V7, V2019-09 and V2020-12

JSON Schema validator for java, based on the org.json API

Fabric's mostly-version-independent mod loader.

Mixin is a trait/mixin framework for Java using ASM

Wildermyth coremodding API (Minimally functional)