Graph-tool is an efficient Python module for manipulation and statistical analysis of graphs (a.k.a. networks). Contrary to most other Python modules with similar functionality, the core data structures and algorithms are implemented in C++, making extensive use of template metaprogramming, based heavily on the Boost Graph Library. This confers it a level of performance that is comparable (both in memory usage and computation time) to that of a pure C/C++ library.

The plfit command fits power-law distributions to empirical (discrete or continuous) data, according to the method of Clauset, Shalizi and Newman (Clauset A, Shalizi CR and Newman MEJ: Power-law distributions in empirical data. SIAM Review 51, 661-703 (2009)).

This package provides a pure Python implementation of the Louvain algorithm for community detection in large networks.

MiniFB (Mini FrameBuffer) is a small, cross-platform library that makes it easy to render (32-bit) pixels in a window.

The Color Transformation Language, or CTL, is a small programming language that was designed to serve as a building block for digital color management systems. CTL allows users to describe color transforms in a concise and unambiguous way by expressing them as programs. In order to apply a given transform to an image, the color management system instructs a CTL interpreter to load and run the CTL program that describes the transform. The original and the transformed image constitute the CTL program's input and output.

SuperFamiconv is a converter for tiled graphics, supporting the graphics formats of the SNES, Game Boy Color and PC Engine game consoles. Automated palette selection is supported.

OpenSubdiv is a set of libraries that implement high performance subdivision surface (subdiv) evaluation on massively parallel CPU and GPU architectures.

OpenVDB is a C++ library comprising a hierarchical data structure and a large suite of tools for the efficient storage and manipulation of sparse volumetric data discretized on three-dimensional grids. It was developed by DreamWorks Animation for use in volumetric applications typically encountered in feature film production.

This package contains the Tachyon raytracer. It supports the typical ray tracer features, most of the common geometric primitives, shading and texturing modes, etc. It also supports less common features such as HDR image output, ambient occlusion lighting, and support for various triangle mesh and volumetric texture formats beneficial for molecular visualization.

POV-Ray is short for the Persistence of Vision Raytracer, a tool for producing high-quality computer graphics. POV-Ray 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.

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.

IlmBase provides several utility libraries for C++. Half is a class that encapsulates ILM's 16-bit floating-point format. IlmThread is a thread abstraction. Imath implements 2D and 3D vectors, 3x3 and 4x4 matrices, quaternions and other useful 2D and 3D math functions. Iex is an exception-handling library.

OpenEXR provides the specification and reference implementation of the EXR file format. The purpose of EXR format is to accurately and efficiently represent high-dynamic-range scene-linear image data and associated metadata, with strong support for multi-part, multi-channel use cases.

MMM is a shared memory protocol for virtualising access to framebuffer graphics, audio output and input event.

ASLI (A Simple Lattice Infiller) is a command-line tool that allows users to fill any 3D geometry with a functionally graded lattice. The lattice infill is constructed out of unit cells, described by implicit functions, whose type, size and feature can be varied locally to obtain the desired local properties.

The OpenSceneGraph is a high-performance 3D graphics toolkit used by application developers in fields such as visual simulation, games, virtual reality, scientific visualization and modeling.

NanoSVG is a simple single-header SVG parser. The output of the parser is a list of cubic bezier shapes. The library suits well for anything from rendering scalable icons in an editor application to prototyping a game.

Mmg is a collection of applications and libraries for bidimensional and tridimensional surface and volume remeshing. It consists of:

• the mmg2d application and library: mesh generation from a set of edges, adaptation and optimization of a bidimensional triangulation and isovalue discretization;

• the mmgs application and library: adaptation and optimization of a surface triangulation and isovalue discretization;

• the mmg3d application and library: adaptation and optimization of a tetrahedral mesh, isovalue discretization and Lagrangian movement;

• the mmg library gathering the mmg2d, mmgs and mmg3d libraries.

This package provides a common standard tangent space library used in baking tools to produce normal maps.

2geom is a C++ library of mathematics for paths, curves, and other geometric calculations. Designed for vector graphics, it tackles Bézier curves, conic sections, paths, intersections, transformations, and basic geometries.

AutoTrace is a utility for converting bitmap into vector graphics. It can trace outlines and midlines, effect color reduction or despeckling and has support for many input and output formats. It can be used with the autotrace utility or as a C library, libautotrace.

GNU Paint is a simple, easy-to-use paint program for the GNOME environment. It supports drawing freehand as well as basic shapes and text. It features cut-and-paste for irregular regions or polygons.

OpenEXR provides the specification and reference implementation of the EXR file format. The purpose of EXR format is to accurately and efficiently represent high-dynamic-range scene-linear image data and associated metadata, with strong support for multi-part, multi-channel use cases.

Anti-Grain Geometry is a high quality rendering engine written in C++. It supports sub-pixel resolutions and anti-aliasing. It is also a library for rendering SVG.