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MockServer is an HTTP(S) mock server and proxy for testing that lets you mock APIs, inspect and modify live traffic, and inject failures. It supports HTTP/1.1, HTTP/2, gRPC, WebSockets, TCP and more on a single port, with additional support for HTTP/3, message brokers, and AI/LLM APIs.

Java / JavaFX / Kotlin Game Library (Engine)

An Engine-Agnostic Deep Learning Framework in Java

Ant Media Server — Ultra-low latency streaming engine with WebRTC (~0.5s), SRT, RTMP, HLS, CMAF, adaptive bitrate, transcoding & scaling

Cyberduck is a libre FTP, SFTP, WebDAV, Amazon S3, Backblaze B2, Microsoft Azure & OneDrive and OpenStack Swift file transfer client for Mac and Windows.

Koog is a JVM (Java and Kotlin) framework for building predictable, fault-tolerant and enterprise-ready AI agents across all platforms – from backend services to Android and iOS, JVM, and even in-browser environments. Koog is based on our AI products expertise and provides proven solutions for complex LLM and AI problems

CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.

Agent framework for the JVM. Pronounced Em-BAY-bel /ɛmˈbeɪbəl/

Creates diagrams from textual descriptions!

XChange is a Java library providing a streamlined API for interacting with 60+ Bitcoin and Altcoin exchanges providing a consistent interface for trading and accessing market data.

Distributed Peer-to-Peer Web Search Engine and Intranet Search Appliance

A powerful free cross-platform RTS game engine. - Report issues at https://springrts.com/mantis/

企业级 Agentic RAG 智能体 - 全链路覆盖文档解析、多路检索、意图识别、问题重写、会话记忆、MCP 工具调用与深度思考。面向真实业务场景，从 0 到 1 完整工程实现。

JRuby, an implementation of Ruby on the JVM

Drivers and libraries for the Xbox Kinect device on Windows, Linux, and OS X

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.

A platform for Reasoning systems (Reinforcement Learning, Contextual Bandits, etc.)

Fully customizable AI chatbot component for your website

Deequ is a library built on top of Apache Spark for defining "unit tests for data", which measure data quality in large datasets.

Non-Metric Space Library (NMSLIB): An efficient similarity search library and a toolkit for evaluation of k-NN methods for generic non-metric spaces.

Google Reader inspired self-hosted personal RSS reader.

High performance Java APM. Powered by ASM. Try it. Test it. If you feel its better, use it.

Deprecated: See README

ChatGPT Java SDK支持流式输出、Gpt插件、联网。支持OpenAI官方所有接口。ChatGPT的Java客户端。OpenAI GPT-3.5-Turb GPT-4 Api Client for Java

Red5 Server core

Apache Linkis builds a computation middleware layer to facilitate connection, governance and orchestration between the upper applications and the underlying data engines.

Amazon Bedrock Agentcore accelerates AI agents into production with the scale, reliability, and security, critical to real-world deployment.

Heritrix is the Internet Archive's open-source, extensible, web-scale, archival-quality web crawler project.

DataSphereStudio is a one stop data application development& management portal, covering scenarios including data exchange, desensitization/cleansing, analysis/mining, quality measurement, visualization, and task scheduling.