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OpenCV is an open source computer vision library originally developed by Intel. It is free for commercial and research use under a BSD license. The library is cross-platform, and runs on Mac OS X, Windows and Linux. It focuses mainly towards real-time image processing, as such, if it finds Intel's Integrated Performance Primitives on the system, it will use these commercial optimized routines to accelerate itself. This implementation is not a complete port of OpenCV. Currently, this library supports : * real-time capture * video file import * basic image treatment (brightness, contrast, threshold, …) * object detection (face, body, …) * blob detection Future versions will include more advanced functions such as motion analysis, object and color tracking, multiple OpenCV object instances … For more information about OpenCV visit the Open Source Computer Vision Library Intel webpage, the OpenCV Library Wiki, and the OpenCV Reference Manual (pdf).

The Open Computer Vision Library has > 500 algorithms, documentation and sample code for real time computer vision. Tutorial documentation is in O'Reilly Book: Learning OpenCV http://www.amazon.com/Learning-OpenCV-Computer-Vision-Library/dp/0596516134

mobibot is the #mobitopia IRC channel bot. It is built on Paul Mutton's PircBot Java-based Framework. mobibot is making extensive use of various open source libraries, including: * Commons CLI * Commons HTTPClient * Commons Logging * Commons Net * delicious-java * Google Tag Library * JWeather * MathEvaluator * Rome * Apache XML-RPC * Twitter4J mobibot was written by Erik C. Thauvin as a replacement for the channel's original ChumpBot. Features mobibot's main functionality is to capture URLs posted on the channel. The URLs are automatically gathered into a publishable RSS feed. Other features include: * Performing calculations * Converting between currencies * Rolling dice * Performing Google searches * Displaying the latest entries on Mobitopia * Performing DNS lookups * Recapping public channel messages * Performing Google spelling queries * Retrieving stock quotes * Displaying the time in various time zones * Listing the users on the channel * Displaying weather information * Posting to Jaiku's #mobitopia channel * Posting to Twitter Some of the internal features include RSS feed backlogs, rolling logs, debugging toggle and much more. If you have any feature suggestions, please post them to the mobibot wiki.

What is WebcamStudio? Your own TV studio in your computer for broadcasting thru a virtual webcam. Mix multiple video source as webcams, movies, images, your desktop and log in your prefered video streaming site like Stikam or BlogTV and start your own show or video blog with: - Cool Special Effects - Text overlay - Video Source transition/rotation/movement... - Animations and Faces! - A webcam at your own image See the features! Why for GNU/Linux? Because there are no solution for Linux and Windows users already have acces to this kind of software. And mostly because I use a lot of Linux technologies that are not available under Microsoft Windows. (Sorry guys!) Based on... * Gstreamer libraries and plugins * gstreamer-java libraries * Java 6 (from Sun)

SciPy (pronounced "Sigh Pie") is open-source software for mathematics, science, and engineering. It is also the name of a very popular conference on scientific programming with Python. The SciPy library depends on NumPy, which provides convenient and fast N-dimensional array manipulation. The SciPy library is built to work with NumPy arrays, and provides many user-friendly and efficient numerical routines such as routines for numerical integration and optimization. Together, they run on all popular operating systems, are quick to install, and are free of charge. NumPy and SciPy are easy to use, but powerful enough to be depended upon by some of the world's leading scientists and engineers. If you need to manipulate numbers on a computer and display or publish the results, give SciPy a try!

Well, not entirely limited to libraries. Useful stuff for visualization practitioners sounded a little non-specific, though. These are all freely available.

The National Center for Biomedical Ontology is a consortium of leading biologists, clinicians, informaticians, and ontologists who develop innovative technology and methods allowing scientists to create, disseminate, and manage biomedical information and knowledge in machine-processable form. Our visionis that all biomedical knowledge and data are disseminated on the Internet using principled ontologies, such that they are semantically interoperable and useful for improving biomedical science and clinical care. Our resources include the Open Biomedical Ontologies (OBO) library, the Open Biomedical Data (OBD) repositories, and tools for accessing and using this information in research. The Center collaborates with biomedical researchers conducting Driving Biological Projects to enable outside research and stimulate technology development in the Center. The Center undertakes outreach and educational activities (Biomedical Informatics Program) to train future researchers to use biomedical ontologies and related tools with the goal of enhancing scientific discovery.

Processing (BETA) library to communicate with MySQL (or any other SQL) databases. note that due to java security restrictions this will not work with applets "out of the box" and that many remote mysql-servers will only allow local access ("localhost") or connections from trusted hosts. (see notes. ) also note that you should have some experience with SQL to put, change and retrieve data from the database.

PubMed is a service of the U.S. National Library of Medicine that includes over 18 million citations from MEDLINE and other life science journals for biomedical articles back to 1948. PubMed includes links to full text articles and other related resources.