A Java serialization/deserialization library to convert Java Objects into JSON and back
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Apache KIE (Knowledge Is Everything) is the home of Drools, OptaPlanner, jBPM, and Kogito.
- rule-engine
- java
- dmn
- hacktoberfest
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.
Lightweight, fast, stable, programmable component-based rule engine — where AI Agents orchestrate just like ordinary components. Uniquely designed DSL: component reuse, sync/async & dynamic orchestration, multi-language scripting, nested rules, hot deployment and smooth refresh. If you can orchestrate LiteFlow, you can orchestrate AI.
Portable AI agent runtime for the JVM. One @Agent class runs on Spring AI, LangChain4j, Anthropic, or 9 more behind one SPI. Token streaming, tool calls, human approvals, and governance over WebSocket, SSE, gRPC, or WebTransport/HTTP3. Speaks MCP, A2A, and AG-UI.
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Screaming fast JSON parsing and serialization library for Android.
🔥 Java enterprise application development framework for full scenario: Restrained, Efficient, Open, Ecologicalll!!! 700% higher concurrency 50% memory savings Startup is 10 times faster. Packing 90% smaller; Compatible with java8 ~ java26; Supports LTS. (Replaceable spring)
- java
- microservice
- rpc
- rest-api
Manifold is a Java compiler plugin, its features include Metaprogramming, Properties, Extension Methods, Operator Overloading, Templates, a Preprocessor, and more.
- java
- intellij
- json
- template-engine
Ultra-fast matching engine written in Java based on LMAX Disruptor, Eclipse Collections, Real Logic Agrona, OpenHFT, LZ4 Java, and Adaptive Radix Trees.
- trading-platform
- trading-api
- lmax-disruptor
- matching-engine
Spring Integration provides an extension of the Spring programming model to support the well-known Enterprise Integration Patterns (EIP)
- spring
- java
- eip
- microservices
Feature Flags for Java made easy
- feature
- toggle
- flipping
Google HTTP Client Library for Java
The Java microservice lib. QBit is a reactive programming lib for building microservices - JSON, HTTP, WebSocket, and REST. QBit uses reactive programming to build elastic REST, and WebSockets based cloud friendly, web services. SOA evolved for mobile and cloud. ServiceDiscovery, Health, reactive StatService, events, Java idiomatic reactive programming for Microservices.
- qbit
- java
- microservice
- websocket-support
🔐 An SSL library for configuring http client or server. Rich with features such as hot reloading ssl and trusting additional certificates during runtime, combining multiple keystores, loading pem files and os/jdk certificates, logging certificate information during ssl handshake, bypassing ssl configuration from other libraries and more
java port of Underscore.js
- java
- underscore
- javascript
- functional-programming
Fast and Easy mapping from database and csv to POJO. A java micro ORM, lightweight alternative to iBatis and Hibernate. Fast Csv Parser and Csv Mapper
JVM support for Apollo Federation
- federation
- graphql
- java
- spring-graphql
Support for reading and writing Google Protocol Buffer objects within Dropwizard
- dropwizard
- protocol-buffers
- java
- protobuf
Refinement and functional value types for Java 8+
- functional-programming
- java
- java8
- maven-central
Proven and opinionated programming, and configuration model for Java and Vertx based applications. Inspired from ATG Nucleus, provides powerful layer base configuration management using simple properties file.
- atg
- nucleus
- ioc
- spring