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potrace is a Peter Selinger's GPLed utility for tracing bitmaps - converting them into smooth, scalable images. It accepts as input a bitmap B/W images (PBM, PGM, PPM and BMP formats), and returns encapsulated PostScript (EPS) as the default output. Other output format are available: PS, SVG, Xfig, PGM, PDF and experimental GimpPath. You can create scalable images from scans, such as logos, hand taken notes, etc. The resulting smooth images can then be rendered at any resolution.

The Persistence of Vision(tm) Ray-Tracer creates three-dimensional, photo-realistic images using a rendering technique called ray-tracing. It reads in a text file containing information describing the objects and lighting in a scene and generates an image of that scene from the view point of a camera also described in the text file. Ray-tracing is not a fast process by any means, but it produces very high quality images with realistic reflections, shading, perspective and other effects.

POV-Ray(TM) Persistence of Vision Ray Tracer The Persistence of Vision(tm) Ray-Tracer creates three-dimensional, photo-realistic images using a rendering technique called ray-tracing. It reads in a text file containing information describing the objects and lighting in a scene and generates an image of that scene from the view point of a camera also described in the text file. Ray-tracing is not a fast process by any means, but it produces very high quality images with realistic reflections, shading, perspective and other effects.

Precision Raster Image Convolution Engine. PRICE can open several image file formats and apply high-quality filters and other enhancements.

projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL. All projectM requires is a video card with 3D acceleration and your favorite music.

pstoedit converts Postscript(TM) and PDF files to other vector graphic formats so that they can be edited graphically.

This set of C (Cython) extensions provides acceleration of common operations for slow points in PyOpenGL 3.x.

PyX is a Python package for the creation of encapsulated PostScript figures. It provides both an abstraction of PostScript and a TeX/LaTeX interface. Complex tasks like 2d and 3d plots in publication-ready quality are built out of these primitives. Features * PostScript output for device independent, free scalable figures * seamless TeX/LaTeX integration * full access to PostScript features like paths, linestyles, fill patterns, transformations, clipping, etc. * advanced geometric operations on paths like intersections, transformations, splitting, etc. * sophisticated graph generation: modular design, pluggable axes, axes partitioning based on rational number arithmetics, flexible graph styles, etc.

PyX is a Python package for the creation of encapsulated PostScript figures. It provides both an abstraction of PostScript and a TeX/LaTeX interface. Complex tasks like 2d and 3d plots in publication-ready quality are built out of these primitives. Features * PostScript output for device independent, free scalable figures * seamless TeX/LaTeX integration * full access to PostScript features like paths, linestyles, fill patterns, transformations, clipping, etc. * advanced geometric operations on paths like intersections, transformations, splitting, etc. * sophisticated graph generation: modular design, pluggable axes, axes partitioning based on rational number arithmetics, flexible graph styles, etc.

Python 2 bindings for Cairo.