Awesome Java

A curated list of awesome Java frameworks, libraries and software.

Contents

• Projects
• Architecture
• Artificial Intelligence
• Bean Mapping
• Build
• Bytecode Manipulation
• Caching
• CLI
• Cloud
• Code Analysis
• Code Coverage
• Code Generators
• Compiler-compiler
• Computer Vision
• Configuration
• Constraint Satisfaction Problem Solver
• CSV
• Data Structures
• Database
• Date and Time
• Decentralization
• Dependency Injection
• Development
• Distributed Applications
• Distributed Transactions
• Distribution
• Document Processing
• Financial
• Formal Verification
• Functional Programming
• Game Development
• Geospatial
• GUI
• High Performance
• HTTP Clients
• Hypermedia Types
• IDE
• Imagery
• Introspection
• Job Scheduling
• JSON
• JVM and JDK
• Logging
• Machine Learning
• Messaging
• Microservice
• Miscellaneous
• Mobile Development
• Monitoring
• Native
• Natural Language Processing
• Networking
• ORM
• PaaS
• Pathfinding
• PDF
• Performance analysis
• Platform
• Processes
• Reactive libraries
• REST Frameworks
• Science
• Search
• Security
• Serialization
• Server
• Template Engine
• Testing
• Utility
• Version Managers
• Web Crawling
• Web Frameworks
• Workflow Orchestration Engines
• Resources
• Related Awesome Lists
• Communities
• Frontends
• Influential Books
• Podcasts and Screencasts
• People
• Websites
• Contributing

Projects

Architecture

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

• ArchUnit - Test library for specifying and asserting architecture rules.
• jMolecules - Annotations and interfaces to express design and architecture concepts in code.

Artificial Intelligence

Frameworks that help you to leverage LLMs and AI.

• LangChain4j - Simplifies integration of LLMs with unified APIs and a comprehensive toolbox.
• MCP Java SDK - 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.
• simple-openai - Library to use the OpenAI API (and compatible ones) in the simplest possible way.
• Spring AI - Application framework for AI engineering for Spring.

Bean Mapping

Frameworks that ease bean mapping.

• dOOv - Provides fluent API for typesafe domain model validation and mapping. It uses annotations, code generation and a type safe DSL to make bean validation and mapping fast and easy.
• JMapper - Uses byte code manipulation for lightning-fast mapping. Supports annotations and API or XML configuration.
• MapStruct - Code generator that simplifies mappings between different bean types, based on a convention-over-configuration approach.
• ModelMapper - Intelligent object mapping library that automatically maps objects to each other.
• Orika - JavaBean-mapping framework that recursively copies (among other capabilities) data from one object to another.
• reMap - Lambda and method handle-based mapping which requires code and not annotations if objects have different names.