A class loader framework

Per-directory local and remote repository metadata.

Core classes of Apache Maven to manage the building process.

The API for Maven 3 plugins - Mojos - development.

Model for Maven POM (Project Object Model)

The Maven Plugin Tools Extractor API provides an API to extract descriptor information from Maven Plugins.

Interface and implementation of Maven Artifact model

Maven Wagon API that defines the contract between different Wagon implementations

The Plexus IoC container API and its default implementation.

A collection of various utility classes to ease working with strings, files, command lines and

QDox is a high speed, small footprint parser for extracting class/interface/method definitions from source files

JUnit Jupiter is the API for writing tests using JUnit 5.