Design patterns implemented in Java

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

Free and Open Source, Distributed, RESTful Search Engine

All Algorithms implemented in Java

Spring Framework

Free universal database tool and SQL client

A libre lightweight streaming front-end for Android.

A browser automation framework and ecosystem.

Open Source Identity and Access Management For Modern Applications and Services

Telegram for Android source

Jenkins automation server

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…

MyBatis SQL mapper framework for Java

The official home of the Presto distributed SQL query engine for big data

Graphs for Everyone

Vert.x is a tool-kit for building reactive applications on the JVM

Apache Druid: a high performance real-time analytics database.

APM, (Application Performance Management) tool for large-scale distributed systems.

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

OpenRefine is a free, open source power tool for working with messy data and improving it

Multitask、MultiThread(MultiConnection)、Breakpoint-resume、High-concurrency、Simple to use、Single/NotSingle-process

A Java API for generating .java source files.

Server supporting the Signal Private Messenger applications on Android, Desktop, and iOS

A Camera component for React Native. Also supports barcode scanning!

Flyway by Redgate • Database Migrations Made Easy.

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

A podcast manager for Android

React Native Local and Remote Notifications

Apache Storm

GraphQL Java implementation