《Hello 算法》：动画图解、一键运行的数据结构与算法教程。支持 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 代码。简体版和繁体版同步更新，English version in translation

Free and Open Source, Distributed, RESTful Search Engine

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

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

High-quality QR Code generator library in Java, TypeScript/JavaScript, Python, Rust, C++, C.

The main repository of Telegram X — official alternative Telegram client for Android.

Open Location Code is a library to generate short codes, called "plus codes", that can be used as digital addresses where street addresses don't exist.

🌴A simple & beautiful blogging system implemented with spring-boot & thymeleaf & mybatis My Blog 是由 SpringBoot + Mybatis + Thymeleaf 等技术实现的 Java 博客系统，页面美观、功能齐全、部署简单及完善的代码，一定会给使用者无与伦比的体验

Apache Log4j is a versatile, feature-rich, efficient logging API and backend for Java.

Android client SDK for communicating with OAuth 2.0 and OpenID Connect providers.

Wallet CLI

The simplest convenient interface to the Google Cloud Datastore

Trust - Ethereum Wallet for Android (Inactive Repository)

layui 版本的 My-Blog : A simple & beautiful blogging system implemented with spring-boot & layui & thymeleaf & mybatis My Blog 是由 SpringBoot + Layui + Mybatis + Thymeleaf 等技术实现的 Java 博客系统，页面美观、功能齐全、部署…

Basic Android Accessibility: making sure everyone can use what you create!