Search processing.org:

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##### Video

Interface to Apple's QuickTime for using a camera, playing movie files, and creating movies.

##### Network

Sending and receiving data via the Internet through the creation of simple clients and servers.

##### Serial

Supports sending data between Processing and external hardware via serial communication (RS-232).

##### Candy SVG Import

A minimal SVG file importer. Loads and displays vector files.

##### XML Import

A minimal XML importer.

##### OpenGL

Support for exporting OpenGL accelerated sketches. Utilizes the JOGL library.

##### PDF Export

Generates PDF files.

##### DXF Export

Lines and triangles from P3D or OPENGL rendering modes can be sent directly to a DXF file.

##### » Netscape.JavaScript

Methods for interfacing between Javascript and Java Applets exported from Processing.

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#### Sound

##### » Minim

by Damien Di Fede
Uses the JavaSound API to provide an easy-to-use audio library. A simple API while still providing a reasonable amount of flexibility for more advanced users.

##### » Ess

by Krister Olsson
Sound library that allows sound sample data to be loaded or streamed, generated in real-time, manipulated, saved, analyzed or simply played back.

##### » jm-Etude

by Daniel Dihardja
Provides functions to communicate with jMusic for easier music composition programming.

##### » Sonia

by Amit Pitaru
Audio library for sound playback and synthesis. Integrates Jsyn and requires a browser plugin for playback.

##### » Sonia Helper

by Marius Watz
Normalizes and damps the FFT analysis values produced by Sonia. This is built into Ess.

#### Import/Export

##### » OBJ Loader

by Tatsuya SAITO and polymonkey
Loads .OBJ files into Processing, includes geometry and texture data.

##### » Collada Export

by Marcus Wendt
Exports 3D geometry and material data in the COLLADA format.

##### » proSVG

by Christian Riekoff
Exports vector graphics in the .SVG format.

##### » SimplePostScript

by Marius Watz
Writing vector files in the PostScript format.

#### Tools

##### » proDOC

by Christian Riekoff
Generates documentation for Processing libraries from the source code. Requires inserting tags in the comments of the classes, fields, and methods.

##### » ImageAdjuster

by Dave Bollinger
Performs brightness, contrast, gamma and other such adjustments on images. Contains both high-level and low-level routines, and can be extended via user-defined transformations.

#### Hardware

##### » Most Pixels Ever

by Daniel Shiffman and Chris Kairalla
Framework for spanning Processing sketches across multiple screens.

##### » Apple SMS

by Daniel Shiffman
Interface to the Apple Sudden Motion Sensor in PowerBooks (and MacBooks) since 2005.

##### » Apple Light Sensor

by Martin Rädlinger
Interface to the Light Sensor in MacBook Pro computers.

##### » NXTComm

by Jorge Cardoso
Allows control of the Lego Mindstorms NXT robots.

#### Animation and Typography

##### » Shapetween

by Elie Zananiri and Golan Levin
An easy way to animate elements in a variety of ways.

##### » NextText

by Elie Zananiri / Obx Labs
Assists in making dynamic and interactive text-based applications.

##### » MovingLetters

by Ilu
Typeface of moving, jittering letters.

#### Computer Vision

##### » BlobDetection

by v3ga
Performs the computer vision technique of finding "blobs" in an image.

##### » reacTIVision TUIO

by Martin Kaltenbrunner
Interface to the reacTIVision vision engine for object tracking.

##### » LibCV

by toxi
Grabs video frames from a camera using the Java Media Framework (JMF). Does not require QuickTime or WinVDIG for Windows machines.

##### » JMyron (WebCamXtra)

by Josh Nimoy et al.
Camera library for motion detection, color tracking, glob distinction, and pixel addressing. Does not require QuickTime or WinVDIG for Windows machines.

#### 3D

##### » OCD

by Kristian Linn Damkjer
The Obsessive Camera Direction (OCD) library allows intuitive control and creation of Processing viewport Cameras.

##### » surfaceLib

by Andreas Köberle and Christian Riekoff
An easy way to create different 3D surfaces. Contains a library of surfaces and a class to extend.

##### » Gestalt

by d3 and senor pako
Gestalt is an open structured environment, designed to prototype and develop OpenGL- and Java-based sketches and applications.

##### » Fog

by JohnG
Simple fog effect for Processing using P3D and OPENGL renderers.

##### » Vector 3D

by Dan Shiffman
The Vector3D class from The Nature of Code course.

#### Simulation \ Math

##### » Physics

by Jeffrey Traer Bernstein
Simple particle system physics engine. No collisions, just particles, springs, gravity & drag.

##### » AI Libraries

by Aaron Steed
A set of libraries to assist with artificial programming tasks such as genetic algorithms and the AStar algorithm.

##### » Cell Noise

by Carl-Johan Rosén
Explores cell noise (Worley noise), a pattern generation algorithms useful for animation.

##### » Oscillator

by taka
Useful for generating series of waves.

##### » MatrixMath

by Francis Bitonti
Helpful code for matrix operations.

#### Interface

##### » controlP5

by Andreas Schlegel
Custom GUI elements with the ability to show/hide and move while the program is running.

##### » proCONTROLL

by Christian Riekoff
Allows Processing to communicate with control devices like joysticks and joypads.

##### » MyGUI

by Markavian
Implements buttons, radio button, checkboxes, sliders, and scroll bars.

##### » Interfascia

by Brendan Berg
Provides a toolkit of standard interface widgets like text fields, buttons, checkboxes, sliders, etc.

##### » SpringGUI

by Philipp Seifried
GUI library that wraps around the java.awt components.

##### » JTablet

by Cellosoft
Graphics tablet access for Java applets (while this is not strictly a Processing library, it's extremely useful and easy to interface.)

#### Compilations

##### » unlekkerLib

by Marius Watz
Contains code for STL import and export, Mersenne Twister pseudo-random number generator, a TileSaver class for creating high-res images from OpenGL graphics by tiling the viewport, and for checking line intersection and collision with complex 2D polygons.

#### Data \ Protocols

##### » Yahoo! Search Library

by Daniel Shiffman
Access the Yahoo! Search API directly in Processing.

##### » SFTP

by Daniel Shiffman
Allows Processing to use SFTP for secure file transfer; uses JSch (Java Secure Channel).

##### » Switchboard

by Jeff Crouse
Web services library. Helps in extracting data from services such as Google, Yahoo, Amazon, Del.icio.us, Flickr, and many more.

##### » proMidi

by Christian Riekoff
Allows Processing to send and receive midi information.

##### » proHTML

by Christian Riekoff
Allows Processing to take an HTML document and change it from a linear string to a tree structure.

##### » proXML

by Christian Riekoff
Allows Processing to read and write XML files.

##### » Google API

by Tatsuya SAITO
Interface to query web pages through Google search.

##### » oscP5

by Andreas Schlegel
An OpenSound Control (OSC) implementation for Processing.

##### » MySQL

by Florian Jenett
Facilitates communication with a MySQL database.

##### » Carnivore

by RSG
A TCP/UDP packet sniffer library for the Processing programming language.

##### » MaxLink

by Jesse Kriss
Enables communication between Processing and Max/MSP 4.5

##### » Monomic

by Jesse Kriss
Enables communication between Processing and the monome 40h device.

##### » UDP

by Stephane Cousot
Enables simple UDP communication, as well as multicast support.

##### » xmlrpclib

by Burak Arikan
An XML-RPC library for Processing. XML-RPC is a widely adopted Remote Procedure Calling protocol that works over the Internet.

##### » EnvironmentXML

by Usman Haque
Enables simple access to and from the EnvironmentXML website, which hosts a repository of data feeds from different environments around the world.

##### » ID3

by Jorge Cardoso
Allows Processing to read the ID3v1.1 tags from MP3 files.

##### » QRCode

by Daniel Shiffman
Reads QR Code images, a two-dimensional barcode format.

##### » Social Networks Library

by Todd Holloway
Contains network library components, but emphasizes tools for selecting subsets and traversing the network.

Information about contributing a library is included in "howto.txt", located in the "libraries" folder included with the Processing software. For further information, visit the discourse.