Free and Open Source, Distributed, RESTful Search Engine

Everything you need to know to get the job.

Termux - a terminal emulator application for Android OS extendible by variety of packages.

Google core libraries for Java

A libre lightweight streaming front-end for Android.

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

Netty project - an event-driven asynchronous network application framework

Open Source Identity and Access Management For Modern Applications and Services

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

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

Desktop/Android/HTML5/iOS Java game development framework

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex di…

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

IntelliJ IDEA & IntelliJ Platform

A fast dependency injector for Android and Java.

Zipkin is a distributed tracing system

Graphs for Everyone

Apache Pulsar - distributed pub-sub messaging system

Logstash - transport and process your logs, events, or other data

Free implementation of Play Services

Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)

Apache ZooKeeper

Guice (pronounced 'juice') is a lightweight dependency injection framework for Java 11 and above, brought to you by Google.

AWS Service registry for resilient mid-tier load balancing and failover.

The most widely used, high performance Minecraft server that aims to fix gameplay and mechanics inconsistencies

Your Cheat Sheet For Android Interview - Android Interview Questions and Answers