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

A powerful 🚀 Android chart view / graph view library, supporting line- bar- pie- radar- bubble- and candlestick charts as well as scaling, panning and animations.

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

Open Source Identity and Access Management For Modern Applications and Services

Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

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

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

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

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.

Powerful and flexible library for loading, caching and displaying images on Android.

Modern Java - A Guide to Java 8

This is a sample app that is part of a series of blog posts I have written about how to architect an android application using Uncle Bob's clean architecture approach.

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

Git Server with CI/CD, Kanban, and Packages. Seamless integration. Unparalleled experience.

A circular ImageView for Android

Very spicy additions to the Java programming language.

Conductor is a microservices orchestration engine.

Cute view animation collection.

The Java gRPC implementation. HTTP/2 based RPC

A configuration as code language with rich validation and tooling.

Fast Android Development. Easy maintainance.

A collection of source code generators for Java.

AutoMQ is a diskless Kafka® on S3. 10x Cost-Effective. No Cross-AZ Traffic Cost. Autoscale in seconds. Single-digit ms latency. Multi-AZ Availability.

Android filters based on OpenGL (idea from GPUImage for iOS)

A damn simple library for building production-ready RESTful web services.

Custom fonts in Android the easy way...

Annotation-triggered method call logging for your debug builds.