Free Presentation Programs
Free charting and plotting tool with hundreds of charting styles and multiple configuration parameters. Includes importing data and exporting charts to several formats (JPEG, PNG, GIF...). Versions available for Linux and Windows. Freeware, open source, GPL.
Free program for creating Flash presentations, including: splash screens, slideshows, self-running shows, and multi-page presentations that are commonly used in electronic sales brochures and catalogues. Your presentations can be exported as an HTML page with an embedded SWF (Flash) file or as an executeable file which you can run on any Windows PC.
Free Fractal Software
Freeware fractal flame editor for Windows
Double Fractal is a program that creates fast and easily high complex images . No specific knowledge is needed to use this program, it is a program that can be run just for fun!
Win32/OSX Mandelbrot generator. Features OpenGL, realtime zoom, SSE/AltiVec QuadPixel calc, SSE2 and 3DNow! DualPixel calc, FPU per pixel calc, GPU asm (FragmentProgram/VertexProgram) calc, multiprocessor support, and benchmarking.
A freeware fractal generator that can produce mysterious and beautiful mathematically-based images.
Various graphics utilities and services
Freeware. Program which enables you to mix two pictures, including effects: gradient, airosol, transform, color, negative, frames, etc.
A Ruler For Windows
A free on-screen pixel ruler for your PC.
Can tell you the exact colour value of any pixel on your screen.
Program which reduces GIF images by removing unnecessary data structures and comments contained in the image file.
Freeware. Converts any JPEG or BMP file to a HTML text-art file.
Mihov Gallery Creator
Automatically creates a Web site including index file from your image collection; various customization options and FTP upload.
Advanced & scientific graphics programs
CVIPtools is a UNIX/Win32-based software package developed at the Computer Vision and Image Processing Laboratory at Southern Illinois University at Edwardsville. One of the primary purposes of the CVIPtools development is to allow students, faculty, and other researchers to explore the power of computer processing of digital images.
Freeware application for drawing graphs of mathematical functions. Runs on Windows.
Free program for Windows to draw mathematical functions. It can plot 2-dimensional, parametric, polar, and 3-dimensional functions.
Vis5D is a system for interactive visualization of large 5-D gridded data sets such as those produced by numerical weather models. One can make isosurfaces, contour line slices, colored slices, volume renderings, etc of data in a 3-D grid, then rotate and animate the images in real time. There's also a feature for wind trajectory tracing, a way to make text anotations for publications, support for interactive data analysis, etc.
Freeware, open-source. Versions available for: SGI, RS/6000, SunOS, HP-UX, DEC, Linux, Windows, OS/2.
Freeware, open source. VMD is a molecular visualization program for displaying, animating, and analyzing large biomolecular systems using 3-D graphics and built-in scripting. VMD supports computers running Unix, MACOS-X or Windows, is distributed free of charge, and includes source code.