Graphics and Photo:

GarlicSim is a platform for writing, running and analyzing simulations. It is general enough to handle any kind of simulation: Physics, game theory, epidemic spread, electronics, etc.

Wings 3D is a free and open source polygon mesh subdivision modeller ideally suited for modeling and texturing low to medium density polygon meshes. It has a wide range of very effective tools optimised for these tasks hidden behind its ‘minimalistic’ interface.

Axel is an algebraic geometric modeler which aims to provide “algebraic modeling” tools for the manipulation and computation with implicit and parametric curves or surfaces.

The Persistence of Vision Raytracer, or POV-Ray, is a cross platform ray tracing program for creating stunning three-dimensional graphics.

OGRE (Object-Oriented Graphics Rendering Engine) is a scene-oriented, flexible 3D engine written in C++ designed to make it easier and more intuitive for developers to produce applications utilising hardware-accelerated 3D graphics.

OpenFX is an Open-Source 3D modeling, animation and rendering suite created by Dr. Stuart Ferguson. Its powerful feature-set includes a full renderer and raytrace engine, NURBS support, kinematics-based animation, morphing, and an extensive plugin API.

Art of Illusion is a 3D modelling and rendering studio. It is written entirely in Java, and should be usable on any Java Virtual Machine.

Crystal Space is a free cross-platform software development kit for realtime 3D graphics and in particular games. Officially supports Linux, OSX and Windows.

Blender is a respected 3D content creation suite, available for all major operating systems and distributed under GPL licensing. Create models, shade, animate and make interactive 3D.

Dia is free and open source general-purpose diagramming software, developed as part of the GNOME project’s office suite.

An open source, downloadable, multi-scale, virtual catalog of the mouse brain and its cellular constituents.

Dasher is an information-efficient text-entry interface, driven by natural continuous pointing gestures. Dasher is a competitive text-entry system wherever a full-size keyboard cannot be used.

Opengazer is an open source application that uses an ordinary webcam to estimate the direction of your gaze. This information can then be passed to other applications.

The Google Font Directory lets you browse all the fonts available via the Google Font API. All fonts in the directory are available for use on your website under an open source license and are served by Google servers.

Time Flow is an open source java desktop time line application, a visualization tool for temporal data.

ALEMBIC is an open source exchange format that aims to become the standard for exchanging animated computer graphics scenes between content creation software packages.

The OpenMoco system is an open-source software and hardware motion control system for time-lapse photographers and videographers. We also strive to provide an open environment for the photographic community to discuss all types of motion control and contribute free and open software and hardware designs for all types of photography.

Tux Paint is a free, award-winning drawing program for children ages 3 to 12 (for example, key stages 1 and 2). It combines an easy-to-use interface, fun sound effects, and an encouraging cartoon mascot who guides children as they use the program.

OpenGameArt.org is a community that brings like-minded coders and artists together for the purpose of creating Open Source video games, by providing a human-edited, searchable database of freely-licensed art resources.

The Elisa Media Center allows you to watch your own movies and video clips as well as those found online. It features an intuitive interface with a professional look and feel which can be easily used with a standard TV remote control.

imgSeek is a photo collection manager and viewer with content-based search and many other features. The query is expressed either as a rough sketch painted by the user or as another image you supply (or an image in your collection).

digiKam is an advanced digital photo management and editing application that uses KDE SC 4 desktop environment technologies.

MTPaint is a light-weight graphics editor and paint program for Windows and Linux that comes with an interesting feature set.

The PosteRazor cuts a raster image into pieces which can afterwards be printed out and assembled to a poster.

Seashore is an open source image editor for Mac OS X’s Cocoa framework. It features gradients, textures and anti-aliasing for both text and brush strokes.

Xara Xtreme for Linux is a powerful, general purpose graphics program for Unix platforms including Linux, FreeBSD and (in development) OS-X.

Hugin is an easy to use cross-platform panoramic imaging tool. You can assemble a mosaic of photographs into an immersive panorama image, stitch any series of overlapping pictures and much more.

Paint.NET is free image and photo editing software for Windows operating systems. It’s many features include features an intuitive user interface with support for layers, unlimited undo, special effects, and a wide variety of useful and powerful tools.

GIMP is the definitive GNU image manipulation software, ideal for tasks such as photo retouching, image composition and image authoring. It works across most operating systems and is delivered in a variety of different languages.

Automatically capture the primary display as a series of screenshots saved in chronological order at a capture rate determined by you.

Greenshot is a revolutionary screenshot tool optimized for productivity.

ZScreen is an open-source screen capture program that allows for region, window, and full-screen screenshots. It can FTP screenshots and put the URL in your clipboard in a single keystroke.

Pencil is an animation/drawing software for Mac OS X, Windows, and Linux. It lets you create traditional hand-drawn animation (cartoon) using both bitmap and vector graphics. Pencil is free and open source.

Inskscape is a great vector graphics editor, with capabilities similar to Illustrator, CorelDraw, or Xara X, using the W3C standard Scalable Vector Graphics (SVG) file format.