Java Platform Apache Commons

Provides a set of pipeline utilities designed around work queues that run in parallel to sequentially process data objects.

A small framework for microbenchmark clients, with implementations for Commons DBCP and Pool.

Interface to signing and verifying data using OpenPGP.

Nabla provides automatic differentiation classes that can generate derivative of any function implemented in the Java language.

Monitoring aims to provide a simple but extensible monitoring solution for Java applications.

JNet allows to use dynamically register url stream handlers through the java.net API.

Continuation implementation to capture the state of the application.

Id is a component used to generate identifiers.

Adds the feature of localized message bundles that consist of one or many localized texts that belong together.

A general purpose Graph APIs and algorithms.

Java library for working with flat data structures.

Java library inspired by the UNIX find command.

Commons-Convert aims to provide a single library dedicated to the task of converting an object of one type to another.

Redesign of Commons CLI.

Find Class interfaces, methods, fields, and annotations without loading.

Redesign of Commons BeanUtils.

Library for creating dynamic proxies.

Chain of Responsibility pattern implementation.

Utilities for manipulating Java Beans using the XPath syntax.

An implementation of the State Chart XML specification aimed at creating and maintaining a Java SCXML engine.

A pure-Java image library.

Bean Scripting Framework

XML-to-Java-object mapping utility.

A functor is a function that can be manipulated as an object, or an object representing a single, generic function.

Alternative invocation mechanism for unix-daemon-like java code.

Java Compiler Interface.

An Object-Graph Navigation Language.

Wrapper around a variety of logging API implementations.

API for dealing with external process execution and environment management in Java.

Lightweight, self-contained mathematics and statistics components.

Database connection pooling services.

Extends or augments the Java Collections Framework.

Easy-to-use wrappers around the Java reflection and introspection APIs.

Provides an easy way to enhance (weave) compiled bytecode.

Common implementation of RDF 1.1 that could be implemented by systems on the JVM.

Commons Rng provides implementations of pseudo-random numbers generators.

Collection of network utilities and protocol implementations.

Framework to define validators and validation rules in an xml file.

Command Line arguments parser.

Expression language which extends the Expression Language of the JSTL.

Provides extra functionality for classes in java.lang.

File upload capability for your servlets and web applications.

JDBC helper library.

Library for sending e-mail from Java.

Java Caching System.

Component for reading and writing comma separated value files.

XML based scripting and processing engine.

Virtual File System component for treating files, FTP, SMB, ZIP and such like as a single logical file system.

Reading of configuration/preferences files in various formats.

Collection of I/O utilities.

Defines an API for working with tar, zip and bzip2 files.

General encoding/decoding algorithms (for example phonetic, base64, URL).

Byte Code Engineering Library

Generic object pooling component.