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media-libs/gegl
A graph based image processing framework
sys-devel/gcc
The GNU Compiler Collection
media-gfx/digikam
Digital photo management application
dev-cpp/eigen
C++ template library for linear algebra
media-libs/libsoundtouch
Audio processing library for changing tempo, pitch and playback rates
media-gfx/inkscape
SVG based generic vector-drawing program
sci-visualization/paraview
Powerful scientific data visualization application
sci-libs/calculix-ccx
A Free Software Three-Dimensional Structural Finite Element Program
sci-chemistry/openbabel
Interconverts file formats used in molecular modeling
sci-chemistry/gromacs
The ultimate molecular dynamics simulation package
media-libs/freeverb3
Reverb and Impulse Response Convolution plug-ins (Audacious/JACK)
media-gfx/graphicsmagick
Collection of tools and libraries for many image formats
media-gfx/rawtherapee
A powerful cross-platform raw image processing program
media-gfx/gimp
GNU Image Manipulation Program
sys-devel/gettext
GNU locale utilities
app-arch/rpm
The RPM Package Manager
sci-libs/vtk
The Visualization Toolkit
media-gfx/imagemagick
A collection of tools and libraries for many image formats
dev-lang/gdl
GNU Data Language
dev-lang/R
Language and environment for statistical computing and graphics
games-emulation/sdlmame
Multiple Arcade Machine Emulator + Multi Emulator Super System (MESS)
games-emulation/advancemame
GNU/Linux port of the MAME emulator with GUI menu
sci-geosciences/gmt
Powerful map generator
app-arch/par2cmdline
A PAR-2.0 file verification and repair tool
dev-libs/crypto++
C++ class library of cryptographic schemes
sci-mathematics/gretl
Regression, econometrics and time-series library
sys-devel/gcc-apple
Apple branch of the GNU Compiler Collection, Developer Tools 4.0
app-accessibility/speech-tools
Speech tools for Festival Text to Speech engine
sci-visualization/gwyddion
Framework for Scanning Mode Microscopy data analysis
app-emulation/vice
Versatile Commodore Emulator
sci-electronics/kicad
Electronic Schematic and PCB design tools
media-gfx/enblend
Image Blending with Multiresolution Splines
media-gfx/blender
3D Creation/Animation/Publishing System
app-text/tesseract
An OCR Engine, originally developed at HP, now open source
app-portage/portage-utils
Small and fast Portage helper tools written in C
sci-misc/nco
Command line utilities for operating on netCDF files
media-sound/fluidsynth
Software real-time synthesizer based on the Soundfont 2 specifications
media-sound/sox
The swiss army knife of sound processing programs
app-crypt/johntheripper
fast password cracker
sci-physics/bullet
Continuous Collision Detection and Physics Library
media-libs/opencv
A collection of algorithms and sample code for various computer vision problems
sci-libs/fftw
Fast C library for the Discrete Fourier Transform
sci-libs/cholmod
Sparse Cholesky factorization and update/downdate library
sci-libs/spqr
Multithreaded multifrontal sparse QR factorization library
sci-libs/mkl
Intel Math Kernel Library
sci-libs/metis
A package for unstructured serial graph partitioning
sci-libs/mathgl
Math Graphics Library
sci-libs/libsvm
Library for Support Vector Machines
sci-libs/parmetis
Parallel (MPI) unstructured graph partitioning library
sci-libs/umfpack
Unsymmetric multifrontal sparse LU factorization library