Google core libraries for Java

Getting Started with Spring Boot 3:

Netty project - an event-driven asynchronous network application framework

Telegram for Android source

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

光 HikariCP・A solid, high-performance, JDBC connection pool at last.

High Performance Inter-Thread Messaging Library

MIT Deep Learning Book in PDF format (complete and parts) by Ian Goodfellow, Yoshua Bengio and Aaron Courville

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

Interview questions

A barebones WebSocket client and server implementation written in 100% Java.

Spring Security

Java JsonPath implementation

Distributed and fault-tolerant realtime computation: stream processing, continuous computation, distributed RPC, and more

📈 Capturing JVM- and application-level metrics. So you know what's going on.

Android 技术中台，但愿人长久，搬砖不再有

Asynchronous Http and WebSocket Client library for Java

configuration library for JVM languages using HOCON files

A sample Android app which showcases advanced usage of Dagger among other open source libraries.

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

The simple, stupid rules engine for Java

A decentralized bitcoin exchange network

Brings the popular ruby faker gem to Java

esProc SPL is a JVM-based programming language designed for structured data computation, serving as both a data analysis tool and an embedded computing engine.

Decompiler from Java bytecode to Java, used in IntelliJ IDEA.

Distributed lock for your scheduled tasks

Downloads albums from the web in bulk for archive purposes

Real-time transport layer for Java AI agents. Build once with @Agent — deliver over WebSocket, SSE, gRPC, and WebTransport/HTTP3. Talk MCP, A2A and AG-UI.

High performance non-blocking webserver

Google Reader inspired self-hosted personal RSS reader.