Package	Description
ratpack.config	Provides the ability to access configuration data from a variety of sources, such as YAML, JSON, properties files, system properties, and environment variables.
ratpack.consul	Support for integrating Ratpack applications with Hashicorp's Consul service discovery and distributed configuration engine.
ratpack.core.bytebuf
ratpack.core.error	Types that deal with handling application errors.
ratpack.core.file	Types for dealing with the file system and serving files.
ratpack.core.form	Support for handling uploaded forms, including file uploads.
ratpack.core.handling	The handling of application requests.
ratpack.core.handling.direct	Low level direct access to the underlying Netty internals.
ratpack.core.health	Health checks report on the status of key components in the system and are generally used for monitoring and reporting.
ratpack.core.http	The HTTP protocol.
ratpack.core.http.client	The HTTP client.
ratpack.core.impose
ratpack.core.jackson	Integration with the Jackson JSON marshalling library.
ratpack.core.logging	Utility classes for integration Ratpack with various logging frameworks.
ratpack.core.parse	Parsing in Ratpack refers to deserializing a request body into a Java object of some type.
ratpack.core.path	Types for managing the paths of requests inside the application.
ratpack.core.render	The renderer framework provides a pluggable mechanism for serializing objects to the response.
ratpack.core.server	Objects used to start a ratpack application.
ratpack.core.service	Services participate in the application start/stop lifecycle.
ratpack.core.sse	Support for Server Sent Events.
ratpack.core.sse.client
ratpack.core.websocket	Support for Websockets.
ratpack.dropwizard.metrics	Integration with Dropwizard Metrics Library.
ratpack.exec	The execution management.
ratpack.exec.api
ratpack.exec.registry	Registries hold objects that can be retrieved via type, and are a key aspect of Ratpack applications.
ratpack.exec.stream	Support for reactive streams.
ratpack.exec.stream.bytebuf
ratpack.exec.util
ratpack.exec.util.retry
ratpack.func
ratpack.groovy	Support for writing Ratpack applications in the Groovy programming language.
ratpack.groovy.handling	Groovy specific extensions to classes in the ratpack.core.handling package.
ratpack.groovy.render	Specialised Groovy support for rendering.
ratpack.groovy.script	Classes for handling Ratpack Groovy scripts.
ratpack.groovy.server	Groovy implementations of the Ratpack server building classes.
ratpack.groovy.sql	Support for providing Groovy's Sql interface.
ratpack.groovy.template	Support for templating based on embedded Groovy code in text.
ratpack.groovy.test
ratpack.groovy.test.embed	Support for creating Groovy based embedded applications.
ratpack.groovy.test.handling
ratpack.gson	Provides integration with Google Gson for JSON parsing and rendering.
ratpack.guice	Integration with Google Guice.
ratpack.h2	Provides integration with H2.
ratpack.handlebars	Integration with Handlebars.java templating engine.
ratpack.hikari	Provides integration with HikariCP library.
ratpack.jdbctx
ratpack.newrelic	Provides integration with New Relic.
ratpack.reactor	Provides integration with the Project Reactor library.
ratpack.retrofit	Integration with Retrofit.
ratpack.rocker	Support for Rocker templates.
ratpack.rx2	Provides integration with the RxJava library.
ratpack.session	Objects for providing Session support.
ratpack.session.clientside	Support for Client Side Session.
ratpack.session.serialization.kryo
ratpack.session.store	Provide a SessionStore implementation backed by Redis.
ratpack.spring	Provides integration with Spring Boot.
ratpack.spring.config
ratpack.test	Fixtures used for testing Ratpack applications (see ApplicationUnderTest).
ratpack.test.embed	Support for creating embedded applications at test time, for testing Ratpack features and extensions.
ratpack.test.exec	Test fixtures for executing and evaluating Promise and Operation outside of a server instance.
ratpack.test.handling	Test fixtures for exercising Handler implementations without start a full EmbeddedApp.
ratpack.test.http	Test fixtures that provide HTTP client interfaces to applications under test.
ratpack.test.mock	Support for creating mocks for remote APIs.
ratpack.thymeleaf3	Integration with Thymeleaf templating engine.