JUnit is a simple framework to write repeatable tests for Java projects. JUnit provides assertions for testing expected results, test fixtures for sharing common test data, and test runners for running tests.

JLine is a Java library for handling console input. It is similar in functionality to BSD editline and GNU readline but with additional features that bring it in par with ZSH line editor. People familiar with the readline/editline capabilities for modern shells (such as bash and tcsh) will find most of the command editing features of JLine to be familiar.

This package includes the line reader.

PowerMock is a framework that extends other mock libraries such as EasyMock with more powerful capabilities. PowerMock uses a custom classloader and bytecode manipulation to enable mocking of static methods, constructors, final classes and methods, private methods, removal of static initializers and more. By using a custom classloader no changes need to be done to the IDE or continuous integration servers which simplifies adoption.

Although the java.net package provides basic functionality for accessing resources via HTTP, it doesn't provide the full flexibility or functionality needed by many applications. HttpClient seeks to fill this void by providing an efficient, up-to-date, and feature-rich package implementing the client side of the most recent HTTP standards and recommendations.

Dataformat backends are used to support format alternatives to JSON, supported by default. This is done by sub-classing Jackson core abstractions.

Jansi is a Java library that allows you to use ANSI escape sequences to format your console output which works on every platform.

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).

Ant is a platform-independent build tool for Java. It is similar to make but is implemented using the Java language, requires the Java platform, and is best suited to building Java projects. Ant uses XML to describe the build process and its dependencies, whereas Make uses Makefile format.

This package contains the runtime library used with generated sources by ANTLR.

The Java Collections Framework is the recognised standard for collection handling in Java. Commons-Collections seek to build upon the JDK classes by providing new interfaces, implementations and utilities. There are many features, including:

• Bag interface for collections that have a number of copies of each object

• BidiMap interface for maps that can be looked up from value to key as well and key to value

• MapIterator interface to provide simple and quick iteration over maps

• Transforming decorators that alter each object as it is added to the collection

• Composite collections that make multiple collections look like one

• Ordered maps and sets that retain the order elements are added in, including an LRU based map

• Reference map that allows keys and/or values to be garbage collected under close control

• Many comparator implementations

• Many iterator implementations

• Adapter classes from array and enumerations to collections

• Utilities to test or create typical set-theory properties of collections such as union, intersection, and closure.

This package provides the Java development kit OpenJDK built with the IcedTea build harness.

Commons CSV reads and writes files in variations of the Comma Separated Value (CSV) format. The most common CSV formats are predefined in the CSVFormat class:

• Microsoft Excel

• Informix UNLOAD

• Informix UNLOAD CSV

• MySQL

• RFC 4180

• TDF

Custom formats can be created using a fluent style API.

Adobe's Extensible Metadata Platform (XMP) is a labeling technology that allows you to embed data about a file, known as metadata, into the file itself. The XMP Toolkit for Java is based on the C++ XMPCore library and the API is similar.

es5-shim.js patches a JavaScript context to contain all ECMAScript 5 methods that can be faithfully emulated with a legacy JavaScript engine. es5-sham.js patches other ES5 methods as closely as possible. Many of these shams are intended only to allow code to be written to ES5 without causing run-time errors in older engines. In many cases, this means that these shams cause many ES5 methods to silently fail.

The files in this collection implement JSON encoders/decoders in JavaScript.

json2.js: This file creates a JSON property in the global object, if there isn't already one, setting its value to an object containing a stringify method and a parse method. The parse method uses the eval method to do the parsing, guarding it with several regular expressions to defend against accidental code execution hazards. On current browsers, this file does nothing, preferring the built-in JSON object.

json_parse.js: This file contains an alternative JSON parse function that uses recursive descent instead of eval.

json_parse_state.js: This files contains an alternative JSON parse function that uses a state machine instead of eval.

cycle.js: This file contains two functions, JSON.decycle and JSON.retrocycle, which make it possible to encode cyclical structures and DAGs in JSON, and to then recover them. This is a capability that is not provided by ES5. JSONPath is used to represent the links.

FileSaver.js implements the saveAs() FileSaver interface in browsers that do not natively support it.

FileSaver.js is the solution to saving files on the client-side, and is perfect for webapps that need to generate files, or for saving sensitive information that shouldn't be sent to an external server.

Selectize is the hybrid of a textbox and <select> box. It's jQuery based and it has autocomplete and native-feeling keyboard navigation; it is useful for tagging, contact lists, etc.

This package provides a reimplementation of the MathJax context menu in TypeScript.

This package provides Chinese stemmers and stopwords for the Lunr Javascript library.

This is an implementation of the strftime procedure for JavaScript. It works in (at least) node.js and browsers. It supports localization and timezones. Most standard specifiers from C are supported as well as some other extensions from Ruby.

This package provides Italian stemmers and stopwords for the Lunr Javascript library.

This package provides Hungarian stemmers and stopwords for the Lunr Javascript library.

This package provides Armenian stemmers and stopwords for the Lunr Javascript library.

MathJax is a JavaScript display engine for LaTeX, MathML, and AsciiMath notation that works in all modern browsers. It requires no plugins or software to be installed on the browser. So the page author can write web documents that include mathematics and be confident that readers will be able to view it naturally and easily.