JCommander is a very small Java framework that makes it trivial to parse command line parameters. Parameters are declared with annotations.

JSON Processing (JSON-P) is a Java API to process (e.g. parse, generate, transform and query) JSON messages. It produces and consumes JSON text in a streaming fashion (similar to StAX API for XML) and allows building a Java object model for JSON text using API classes (similar to DOM API for XML).

ASM is an all purpose Java bytecode manipulation and analysis framework. It can be used to modify existing classes or dynamically generate classes, directly in binary form. The provided common transformations and analysis algorithms allow easily assembling custom complex transformations and code analysis tools.

HttpCore is a set of low level HTTP transport components that can be used to build custom client and server side HTTP services with a minimal footprint. HttpCore supports two I/O models: blocking I/O model based on the classic Java I/O and non-blocking, event driven I/O model based on Java NIO.

This package provides the blocking I/O model library.

OpenJFX is a client application platform for desktop, mobile and embedded systems built on Java. Its goal is to produce a modern, efficient, and fully featured toolkit for developing rich client applications. This package contains base classes for the OpenJFX distribution.

Eclipse LSP4J provides Java bindings for the Language Server Protocol and the Debug Adapter Protocol. This package is a common definition intended to be inherited by other packages.

Sisu is a modular JSR330-based container that supports classpath scanning, auto-binding, and dynamic auto-wiring. This package adds Plexus support to the Sisu-Inject container.

This package provides the Java development kit OpenJDK.

OPS4J stands for Open Participation Software for Java. This package contains utilities for storing and retrieving data from an InputStream.

Plexus classworlds replaces the native ClassLoader mechanism of Java. It is especially useful for dynamic loading of application components.

The codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.

This is a part of the Apache Commons Project.

jsch-agent-proxy is a proxy program to OpenSSH's ssh-agent and Pageant included in Putty. This component contains a connector factory.

This package contains annotations used during the build of the runtime library of ANTLR.

OPS4J stands for Open Participation Software for Java. This package contains utilities and extensions related to java.lang.

Gson is a Java library that can be used to convert Java Objects into their JSON representation. It can also be used to convert a JSON string to an equivalent Java object. Gson can work with arbitrary Java objects including pre-existing objects that you do not have source-code of.

Sisu is a modular JSR330-based container that supports classpath scanning, auto-binding, and dynamic auto-wiring. Sisu uses Google-Guice to perform dependency injection and provide the core JSR330 support, but removes the need to write explicit bindings in Guice modules. Integration with other containers via the Eclipse Extension Registry and the OSGi Service Registry is a goal of this project.

This package provides support for the Eclipse extension registry.

jsch-agent-proxy is a proxy program to OpenSSH's ssh-agent and Pageant included in Putty. This component contains an implementation of USocketFactory using netcat.

Java Compiler Compiler (JavaCC) is the most popular parser generator for use with Java applications. A parser generator is a tool that reads a grammar specification and converts it to a Java program that can recognize matches to the grammar. In addition to the parser generator itself, JavaCC provides other standard capabilities related to parser generation such as tree building (via a tool called JJTree included with JavaCC), actions, debugging, etc.

Picocli is a framework for building command line applications for the JVM. It supports colors, autocompletion, subcommands, and more. Written in Java, usable from Groovy, Kotlin, Scala, etc.

Tinybundles is all about creating OSGi related artifacts like Bundles, Fragments and Deployment Packages with Java Api. It is very convenient to create such artifacts on-the-fly inside Tests (like in Pax Exam). On the other hand, this library can be a foundation of real end user tools that need to create those artifacts.

This package provides the Eclipse core variables module org.eclipse.core.variables.

This package provides the Java development kit OpenJDK.

Plexus-cipher contains a component to deal with encryption and decryption.