Annotations the SpotBugs tool supports for static analysis control and null safety

OAuth client library APIs for 50+ major OAuth 1.0a and 2.0 providers

JNA-based operating system and hardware information library for Java providing cross-platform access to system metrics

A Scala wrapper for Joda Time that provides more pleasant syntax like operators for addition, subtraction, and comparison of dates and times

JNI bindings for Zstd native library that provides fast and high compression lossless algorithm for Java and all JVM languages.

A comprehensive Java parsing library providing complete support for parsing Java source code from Java 1.0 through Java 21 with advanced analysis functionalities.

Statistical Machine Intelligence and Learning Engine providing comprehensive machine learning algorithms for classification, regression, clustering, and feature engineering in Java

A comprehensive Java implementation of the JSON Schema validation specification supporting both draft v4 and v3 with complete validation capabilities and extensibility.

Java Bean to Java Bean mapper that recursively copies data from one object to another

A fast and efficient open source media management and image loading framework for Android that wraps media decoding, memory and disk caching, and resource pooling into a simple and easy to use interface.

Comprehensive Java SDK for integrating with WeChat Pay services including unified orders, refunds, enterprise payments, red packets, profit sharing, and marketing services

Comprehensive Java SDK for WeChat Official Account development with complete API coverage for user management, messaging, materials, menus, and WeChat platform features.

Comprehensive Java SDK for WeChat MiniApp development with complete platform integration

JSR-107 JCache compatibility adapter for Caffeine caching library

Guava compatibility adapter for Caffeine caching library, enabling seamless migration from Guava caches to Caffeine's high-performance caching through familiar Guava Cache API interfaces.

A high performance caching library for Java providing Google Guava-inspired API with advanced eviction policies and comprehensive features

Multiplatform command line interface parsing for Kotlin

Jackson module that adds comprehensive support for serialization and deserialization of Kotlin classes and data classes without requiring default constructors.

General data-binding functionality for Jackson: works on core streaming API

Core annotations used for value types, used by Jackson data binding package.