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Tools for tracking API evolution and detecting breaking changes between library versions.

japicmp ★ 779 Apache-2.0 🟢
Compares two library JARs and reports source- and binary-incompatible changes.

Revapi ★ 223 Apache-2.0 🟠
Extensible API analysis and change tracking with configurable source, binary and semantic compatibility checks.

Roseau ★ 41 MIT 🟢
Detects source- and binary-breaking changes by comparing library versions from JAR files or source code.

Frameworks and libraries that help implementing and verifying design and architecture concepts.

ArchUnit ★ 3.8k Apache-2.0 🟢
Test library for specifying and asserting architecture rules.

jMolecules ★ 1.6k Apache-2.0 🟠
Annotations and interfaces to express design and architecture concepts in code.

jQAssistant ★ 292 GPL-3.0 🟢
Static code analysis with Neo4J-based query language.

Taikai ★ 256 MIT 🟢
ArchUnit extension with predefined architecture rules for common Java technologies.

WireDoctor ★ 8 Apache-2.0 🟢
Runtime diagnostic for Spring Boot apps that detects cyclic bean dependencies and slow beans, with CI regression gates.

Frameworks for building applications with AI, agents and knowledge-based systems.

A2A Java SDK ★ 496 Apache-2.0 🟢
Official Java SDK for the Agent2Agent protocol.

AgentScope Java ★ 5.7k Apache-2.0 🟢
Framework for building distributed, long-running AI agents with tool execution, persistence and multi-agent orchestration.

Anahata ASI ★ 27 Apache-2.0 🟢
Java agent container with local LLM adapters, stateful tool execution, context management and IDE integration.

ARA ★ 6 Apache-2.0 🟢
Java framework for AI agents with tool calling, deterministic input and output contracts, and configurable execution strategies.

Dokimos ★ 58 MIT 🟢
Evaluation framework for LLM and AI-agent applications that scores responses, validates tool calls and execution traces, and catches quality regressions in CI.

Google Gen AI Java SDK ★ 397 Apache-2.0 🟢
Official Java SDK for integrating Google generative AI models.

JADE
Framework and environment for building and debugging multi-agent systems. (LGPL-2.0-only)

JamJet ★ 21 Apache-2.0 🟢
Agent runtime with a Java SDK for building AI agents, supporting graph-based workflow orchestration, multi-agent coordination, and MCP/A2A protocols.

LangChain4j ★ 13.1k Apache-2.0 🟢
Simplifies integration of LLMs with unified APIs and a comprehensive toolbox.

liter-llm ★ 255 MIT 🟢
Provides a Java binding for a unified LLM API client across multiple providers.

MCP Java SDK ★ 3.7k MIT 🟢
Enables applications to interact with AI models and tools through a standardized interface (i.e. Model Context Protocol), supporting both synchronous and asynchronous communication patterns.

Protégé ★ 1.5k 🟠
Provides an ontology editor and a framework to build knowledge-based systems.

Regulus ★ 6 MIT 🟢
Google ADK plugin suite that adds runtime compliance profiles, audit envelopes and GRC adapters for regulated Java AI agents.

simple-openai ★ 382 MIT 🔴
Library to use the OpenAI API (and compatible ones) in the simplest possible way.

Spring AI ★ 9.5k Apache-2.0 🟢
Application framework for AI engineering for Spring.

Spring AI Alibaba ★ 10.9k Apache-2.0 🟢
Agentic AI framework built on Spring AI with model, tool, RAG and workflow integrations.

Frameworks that ease bean mapping.

Immuto ★ 6 🟢
Annotation processor that generates type-safe mapper implementations for Java Records using canonical constructors, with zero runtime reflection.

MapStruct ★ 7.7k 🟢
Code generator that simplifies mappings between different bean types, based on a convention-over-configuration approach.

ModelMapper ★ 2.4k Apache-2.0 🟠
Intelligent object mapping library that automatically maps objects to each other.

reMap ★ 128 Apache-2.0 🟢
Lambda and method handle-based mapping which requires code and not annotations if objects have different names.

Libraries and frameworks for building chatbots and messaging-platform bots.

JBot ★ 1.2k GPL-3.0 🟠
Framework for building chatbots.

JDA ★ 4.7k Apache-2.0 🟢
Wrapping of the Discord REST API and its WebSocket events.

Nyagram ★ 9 MIT 🟢
Reactive, type-safe framework for Telegram bots based on Spring Boot 3 and Java 21.

TelegramBots ★ 5.5k MIT 🟢
Java library for building bots with the Telegram Bot API.

Tools that handle the build cycle and dependencies of an application.

Apache Maven ★ 5.4k Apache-2.0 🟢
Declarative build and dependency management that favors convention over configuration. It might be preferable to Apache Ant, which uses a rather procedural approach and can be difficult to maintain.

Bazel ★ 25.9k Apache-2.0 🟢
Tool from Google that builds code quickly and reliably.

Buck2 ★ 4.4k Apache-2.0 🟢
Encourages the creation of small, reusable modules consisting of code and resources.

Dependency Analysis Gradle Plugin ★ 2.2k Apache-2.0 🟢
Analyzes JVM and Android builds and recommends dependency and plugin changes.

Docker Maven Plugin ★ 1.9k Apache-2.0 🟢
Builds and runs Docker images from Maven.

Eclipse JKube ★ 852 EPL-2.0 🟢
Maven and Gradle plugins for building and deploying Java applications on Kubernetes.

Frontend Maven Plugin ★ 4.4k Apache-2.0 🟢
Installs and runs Node.js frontend tooling from Maven builds.

git-commit-id Maven Plugin ★ 1.7k LGPL-3.0 🟢
Exposes Git revision information to Maven builds and applications.

Gradle ★ 18.8k Apache-2.0 🟢
Incremental builds programmed via Groovy instead of declaring XML. Works well with Maven’s dependency management.

jar-cart ★ 4 MIT 🟢
A modern, zero-configuration package manager and runner for the Java ecosystem written in Go, focusing on developer productivity and build speed.

Javadoc Publisher ★ 58 Apache-2.0 🟠
Generate Javadoc from your maven/gradle project and deploy it automatically on GitHub Page.

Jib ★ 14.5k Apache-2.0 🟢
Builds optimized container images for Java applications without a Docker daemon.

Maven Wrapper ★ 254 Apache-2.0 🟢
Analogue of Gradle Wrapper for Maven, allowing projects to build without a preinstalled Maven.

Polyglot for Maven ★ 919 EPL-1.0 🟢
Extensions for Maven 3.3.1+ that allows writing the POM model in dialects other than XML.

ReleaseRun ★ 1 MIT 🟠
Dependency health checker for pom.xml and Gradle projects that scans for CVEs and outdated packages.

Shadow ★ 4.2k Apache-2.0 🟢
Gradle plugin for creating and transforming executable fat JARs.

Libraries to manipulate bytecode programmatically.

ASM
All-purpose, low-level bytecode manipulation and analysis.

…превью ограничено; полный список — в репозитории.