Reactive Extensions for Java

Spring Data makes it easy to use data access technologies, relational and non-relational databases, map-reduce frameworks, and cloud-based data services.

MongoDB support for Spring Data

The AWS Java SDK for Amazon S3 module holds the client classes that are used for communicating with Amazon Simple Storage Service

Valkey and Redis Java client, Real-Time Data Platform. Sync/Async/RxJava/Reactive API.

Advanced and thread-safe Java Redis client for synchronous, asynchronous, and reactive usage. Supports Cluster, Sentinel, Pipelining, Auto-Reconnect, Codecs and much more.

RxAndroid

Intuitive Event-Driven Reactive Programming Library for Java

Gravitee Gateway API

Gravitee Node API

The reference Java client that allows query, write and management (bucket, organization, users) for the InfluxDB 2.x.