Apache Commons

! Components

! Description

! Latest version

! Released

| Byte Code Engineering Library - analyze, create, and manipulate Java class files

| 6.10.0

| 2024-07-13

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

| 1.10.1

| 2025-01-31

| Bean Scripting Framework - interface to scripting languages, including JSR-223

| 3.1

| 2011-08-17

| Chain of Responsibility pattern implementation

| 1.2

| 2008-06-01

| Command Line arguments parser

| 1.9.0

| 2024-08-10

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

| 1.18.0

| 2025-01-24

| Extends or augments the Java Collections Framework

| 4.5.0-M2

| 2024-06-15

| Defines an API for working with TAR, ZIP and BZIP2 files

| 1.27.1

| 2024-08-16

| Reading of configuration/preferences files in various formats

| 2.11.0

| 2024-06-07

| Cryptographic library optimized with AES-NI wrapping OpenSSL or JCE algorithm implementations

| 1.2.0

| 2023-01-14

| Component for reading and writing comma separated value files

| 1.14.0

| 2025-03-15

| Generic Daemon (unix) or Service (Windows) wrapper for Java code

| 1.4.0

| 2024-05-24

| Database connection pooling services

| 2.13.0

| 2024-11-26

| JDBC helper library

| 1.8.1

| 2023-09-09

| XML-to-Java-object mapping utility

| 3.2

| 2011-12-13

| Library for sending e-mails

| 1.5

| 2017-08-01

| API for dealing with external process execution and environment management

| 1.4.0

| 2024-01-01

| File upload capability for servlets and web applications

| 1.5

| 2023-02-13

| Supports functional programming using functors, objects representing functions

| 1.0 RC1

| 2011-10-20

| General-purpose library for geometric processing

| 1.0

| 2021-08-21

| Pure-Java image library

| 1.0-alpha5

| 2024-04-15

| Collection of I/O utilities

| 2.19.0

| 2025-04-08

| Java Compiler Interface

| 1.1

| 2013-10-14

| Java Caching System

| 3.2.1

| 2024-05-27

| XML based scripting and processing engine

| 1.0.1

| 2017-09-25

| Expression language which extends the Expression Language of the JSTL

| 3.5.0

| 2025-04-11

| Utilities for manipulating Java Beans using the XPath syntax

| 1.4.0

| 2025-04-12

| Provides extra functionality for classes in java.lang

| 3.17.0

| 2024-08-24

| Wrapper around a variety of logging API implementations

| 1.3.5

| 2025-01-31

| Lightweight, self-contained mathematics and statistics components

| 4.0-beta1

| 2022-12-20

| Collection of network utilities and protocol implementations

| 3.11.1

| 2024-06-07

| Number types (complex, quaternion, fraction) and utilities (arrays, combinatorics)

| 1.2

| 2024-08-12

| Generic object pooling component

| 2.12.1

| 2025-01-19

| Library for creating dynamic proxies

| 2.0-RC1

| 2014-04-07

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

| 0.5.0

| 2017-12-08

| Implementions of pseudo-random numbers generators

| 1.6

| 2024-07-15

| Implementation of the State Chart XML specification aimed at creating and maintaining a Java SCXML engine

| 2.0-M1

| 2014-04-03

| Utilities for statistical applications

| 1.1

| 2024-08-20

| Library focused on algorithms working on strings

| 1.13.1

| 2025-04-07

| Framework to define validators and validation rules in an XML file

| 1.8.0

| 2023-12-02

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

| 2.10.0

| 2025-02-01

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

| 2.0

| 2018-09-07

! Components

! Description

| Redesign of Commons BeanUtils

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

| Redesign of Commons CLI

| Aims to provide a single library dedicated to the task of converting an object of one type to another

| Java library inspired by the UNIX find command

| Java library for working with flat data structures

| General purpose Graph APIs and algorithms

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

| Component for generating identifiers

|Implementation of JSR 330, a standards compliant dependency injection framework

| Continuation implementation to capture the state of the application

| Allows using dynamically registered URL stream handlers through the java.net API

|Aims to provide a simple but extensible monitoring solution for Java applications

| Provides automatic differentiation classes that can generate derivative of any function implemented in the Java language

| Interface to signing and verifying data using OpenPGP

| Small framework for microbenchmark clients, with implementations for Commons DBCP and Pool

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

! Components

! Description

| Runtime API to metadata attributes such as doclet tags

| Services for mapping JavaBeans to XML documents and vice versa

| Provides object caching services

| Focuses on introspection and class manipulation

| Component for making features that come along with contract based programming available

| Aims to provide a single library dedicated to the task of converting an object of one type to another

|Tools for locating resources by mapping service/reference names to resource names

|Interpreter for the Expression Language defined by the JSP 2.0 specification

| Provides additional classes for firing and handling events. It focuses on the Java Collections Framework, providing decorators to other collections that fire events.

| RSS and Atom parser designed to support all major versions of RSS and Atom, as well as easy ad hoc extension and RSS 1.0 modules capability

| Jakarta JAR Archive Repository

| HTTP functional testing suite for automated QA, acceptance and regression testing

|Cross platform Java application launcher

| Thin abstraction layer around a project's chosen data mapping technology (a.k.a. DAO pattern)

| Easy to use and lightweight framework for working with JMS in the web tier

|Mechanisms to create Model MBeans compatible with JMX specification

| Object-Graph Navigation Language

|Smaller, faster and easier to work with types supporting Java primitive types

| Provides a lightweight framework for defining and looking up internationalized message strings keyed by a java.util.Locale and a message key

| Toolkit for building web applications

| Simple component for asynchronously dispatching work to another thread in a pool for simple multithreaded programming

| Implementations for multi-level locks, transactional collections and transactional file access

| Provides a framework for building workflow management systems

| Simple and fast importer for XML configuration or import files