Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.

Spring Framework

Google core libraries for Java

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

强大易用的开源建站工具。

Render After Effects animations natively on Android and iOS, Web, and React Native

An image loading and caching library for Android focused on smooth scrolling

ZXing ("Zebra Crossing") barcode scanning library for Java, Android

🔥 Android developers should collect the following utils(updating).

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

Bind Android views and callbacks to fields and methods.

a fast, scalable, multi-language and extensible build system

Jenkins automation server

Event bus for Android and Java that simplifies communication between Activities, Fragments, Threads, Services, etc. Less code, better quality.

A Java serialization/deserialization library to convert Java Objects into JSON and back

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

JDK main-line development https://openjdk.org/projects/jdk

This project is deprecated and stale. The latest ExoPlayer code is available in https://github.com/androidx/media

RxJava bindings for Android

A fast dependency injector for Android and Java.

Quarkus: Supersonic Subatomic Java.

Most popular Mocking framework for unit tests written in Java

Generate diagrams from textual description

greenDAO is a light & fast ORM solution for Android that maps objects to SQLite databases.

Realm is a mobile database: a replacement for SQLite & ORMs

jsoup: the Java HTML parser, built for HTML editing, cleaning, scraping, and XSS safety.

A configuration as code language with rich validation and tooling.

Java JWT: JSON Web Token for Java and Android

An asynchronous, callback-based Http client for Android built on top of Apache's HttpClient libraries.

Flyway by Redgate • Database Migrations Made Easy.