Packages 
Package Description
org.hibernate.reactive.adaptor.impl  
org.hibernate.reactive.bulk
Reactive adaptations of Hibernate ORM's MultiTableBulkIdStrategy.
org.hibernate.reactive.bulk.impl  
org.hibernate.reactive.common
APIs common to both Stage and Mutiny.
org.hibernate.reactive.common.spi  
org.hibernate.reactive.context
Strategies for associating state with the current reactive stream.
org.hibernate.reactive.context.impl  
org.hibernate.reactive.engine
Reactive adaptations of Hibernate ORM's persistence actions.
org.hibernate.reactive.engine.impl  
org.hibernate.reactive.event
Handlers for reactive session events.
org.hibernate.reactive.event.impl  
org.hibernate.reactive.exception  
org.hibernate.reactive.id
Reactive identifier generation.
org.hibernate.reactive.id.impl  
org.hibernate.reactive.loader
Reactive entity, collection, and query loaders.
org.hibernate.reactive.loader.collection
Reactive collection loaders.
org.hibernate.reactive.loader.collection.impl  
org.hibernate.reactive.loader.custom.impl  
org.hibernate.reactive.loader.entity
Reactive entity loaders.
org.hibernate.reactive.loader.entity.impl  
org.hibernate.reactive.loader.hql.impl  
org.hibernate.reactive.logging.impl  
org.hibernate.reactive.mutiny
An API for Hibernate Reactive where non-blocking operations are represented by a Mutiny Uni.
org.hibernate.reactive.mutiny.impl  
org.hibernate.reactive.persister.collection.impl  
org.hibernate.reactive.persister.entity.impl  
org.hibernate.reactive.pool
Abstracts reactive database access via ReactiveConnection and ReactiveConnectionPool.
org.hibernate.reactive.pool.impl  
org.hibernate.reactive.provider
Integration with Hibernate ORM, via the service architecture, along with APIs for starting and configuring Hibernate Reactive.
org.hibernate.reactive.provider.impl  
org.hibernate.reactive.provider.service  
org.hibernate.reactive.session
Defines internal contracts between subsystems of Hibernate Reactive and the ReactiveSession.
org.hibernate.reactive.session.impl  
org.hibernate.reactive.stage
An API for Hibernate Reactive where non-blocking operations are represented by a Java CompletionStage.
org.hibernate.reactive.stage.impl  
org.hibernate.reactive.tuple  
org.hibernate.reactive.util.async.impl
The classes in this package come from the IBM Java async util library (com.ibm.asyncutil:0.1.0): https://github.com/IBM/java-async-util We only use a couple of functions from the library, so we've decided to copy only what we need instead of having an additional dependency.
org.hibernate.reactive.util.impl  
org.hibernate.reactive.vertx
Integration with Vert.x.
org.hibernate.reactive.vertx.impl