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The java implementation of Apache Dubbo. An RPC and microservice framework.
ZXing ("Zebra Crossing") barcode scanning library for Java, Android
Conductor is an event driven agentic workflow engine providing durable and highly resilient execution engine for applications and AI Agents
Redisson: Valkey & Redis Java Client and Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Extends Valkey and Redis with over 60 objects and services: Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Spring, Tomcat, Scheduler, JCache API, Hibernate, RPC, local cache..
CAT 作为服务端项目基础组件，提供了 Java, C/C++, Node.js, Python, Go 等多语言客户端，已经在美团点评的基础架构中间件框架（MVC框架，RPC框架，数据库框架，缓存框架等，消息队列，配置系统等）深度集成，为美团点评各业务线提供系统丰富的性能指标、健康状况、实时告警等。
The Java gRPC implementation. HTTP/2 based RPC
业内为数不多致力于极致体验的超强全自研跨平台(windows/linux/android/iOS)流媒体内核，通过模块化自由组合，支持实时RTMP推流、RTSP推流、RTMP播放器、RTSP播放器、录像、多路流媒体转发、音视频导播、动态视频合成、音频混音、直播互动、内置轻量级RTSP服务等，比快更快，业界真正靠谱的超低延迟直播SDK(延迟低至100~200ms)。
An asynchronous, callback-based Http client for Android built on top of Apache's HttpClient libraries.
Efficient reliable UDP unicast, UDP multicast, and IPC message transport
Apache ShenYu is a Java native API Gateway for service proxy, protocol conversion and API governance.
Asynchronous, non-blocking HTTP & WebSocket client for the JVM
🚀 A Complete Fast Android Networking Library that also supports HTTP/2 🚀
Your go-to microservice framework for any situation, from the creator of Netty et al. You can build any type of microservice leveraging your favorite technologies, including gRPC, Thrift, Kotlin, Retrofit, Reactive Streams, Spring Boot and Dropwizard.
No-root network monitor, firewall and PCAP dumper for Android
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.
A blazingly fast multi-language serialization framework for idiomatic domain objects, schema IDL, and cross-language data exchange.
TwelveMonkeys ImageIO: Additional plug-ins and extensions for Java's ImageIO
💡Extremely fast enterprise server framework, can be used in RPC, game server, web server.
🦎 A lightweight, streaming-native, multi-protocol gateway for AI, APIs, and real-time data. Route LLM requests across providers, govern MCP tools, and connect Kafka, MQTT, and HTTP through one high-performance engine with shared security and observability.
An Extensible Request/Response Workbench
Artificial Intelligence framework for games based on libGDX or not. Features: Steering Behaviors, Formation Motion, Pathfinding, Behavior Trees and Finite State Machines
Add curve at bottom of image views and relative layouts.
A Java library for capturing, crafting, and sending packets.