Provides external configuration. Loads YAML, TOML & properties files, supports dynamic configuration and plugins.

Cloud Native/Kubernetes friendly dependency injection via source code generation instead of expensive reflection and classpath scanning.

It includes bean lifecycle support and component testing.

Flexible and reflection-free JSON library that uses Java annotation processing to generate JSON adapters. One of the top 3 fastest Java JSON libraries.

Reflection-free POJO validation library that uses annotation processing to generate validation adapters to run constraints.

A wrapper on JDK 11's HttpClient. Includes support for defining client API's similar to JAX-RS, Retrofit and Feign. Uses Java annotation processing to generate client API implementations.

Lightweight JAX-RS style HTTP servers using Helidon SE, Javalin, or Jex. Use annotations like @Controller, @Get etc to define a REST API.

Uses Java annotation processing to generate source code for adapting and registering JAX-RS style classes to servers.

Lightweight wrapper over the JDK's own built-in HTTP server, adding various capabilities. (virtual threads, JSON, compression, etc.).

Zero-dependency utility library for building annotation processors.

Zero-dependency library that adds SPI META-INF/services entries for classes and validates modular provides clauses.