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  OpenCV

  Open Source Computer Vision Library

  35,681 weekly downloads
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  GNS3

  GNS3 is a graphical network simulator that allows you to design complex network topologies. You may run simulations or configure devices ranging from simple workstations to powerful Cisco routers. It is based on Dynamips, Pemu/Qemu and Dynagen.

  28,219 weekly downloads
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  matplotlib

  Matplotlib is a python library for making publication quality plots using a syntax familiar to MATLAB users. Matplotlib uses numpy for numerics. Output formats include PDF, Postscript, SVG, and PNG, as well as screen display.

  15,308 weekly downloads
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  Numerical Python

  Numerical Python adds a fast and sophisticated array facility to the Python language. NumPy is the most recent and most actively supported package. Numarray and Numeric are no longer supported.

  12,308 weekly downloads
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  FreeCAD

  a parametric 3D CAD modeler

  11,452 weekly downloads
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  FreeImage

  FreeImage is a library project for developers who would like to support popular graphics image formats (PNG, JPEG, TIFF, BMP and others). Some highlights are: extremely simple in use, not limited to the local PC (unique FreeImageIO) and Plugin driven!

  5,737 weekly downloads
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  PyTables - Hierarchical datasets

  The goal of PyTables is to enable the end user to efficiently and easily manipulate large datasets (both homogenous, i.e. arrays, and heterogenous, i.e. tables) on a persistent, hierarchical way.

  3,109 weekly downloads
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  Brain Workshop

  Python implementation of the Dual N-Back mental exercise

  2,172 weekly downloads
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  K-3D

  K-3D is the free (as in freedom) 3d modeling, animation, and rendering system.

  1,852 weekly downloads
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  Avogadro

  Avogadro is an advanced molecular editor designed for cross-platform use in computational chemistry, molecular modeling, bioinformatics, materials science and related areas. It offers a flexible rendering framework and a powerful plugin architecture.

  1,576 weekly downloads
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  Python Knowledge Engine (PyKE)

  Both forward-chaining and backward-chaining rules (which may include python code) are compiled into python. Can also automatically assemble python programs out of python functions which are attached to backward-chaining rules. See pyke.sourceforge.ne

  1,670 weekly downloads
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  PyMOL Molecular Graphics System

  PyMOL is an OpenGL based molecular visualization system

  1,202 weekly downloads
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  SciDAVis

  SciDAVis is a user-friendly data analysis and visualization program primarily aimed at high-quality plotting of scientific data. It strives to combine an intuitive, easy-to-use graphical user interface with powerful features such as Python scriptability.

  843 weekly downloads
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  Asymptote

  Asymptote is a powerful descriptive vector graphics language for technical drawing, inspired by MetaPost but with an improved C++-like syntax. Asymptote provides for figures the same high-quality typesetting that LaTeX does for scientific text.

  610 weekly downloads
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  Open Dynamics Engine

  A free, industrial quality library for simulating articulated rigid body dynamics - for example ground vehicles, legged creatures, and moving objects in VR environments. It's fast, flexible & robust. Built-in collision detection.

  559 weekly downloads
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  QuantLib

  A quantitative finance C++ library for modeling, pricing, trading, and risk management in real-life. A cross-platform free/open-source tool for derivatives and financial engineering.

  617 weekly downloads
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  PyCAM

  Open Source CAM - Toolpath Generation for 3-Axis CNC machining

  541 weekly downloads
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  Gwyddion

  A data visualization and processing tool for scanning probe miscroscopy (SPM, i.e. AFM, STM, MFM, SNOM/NSOM, ...) and profilometry, useful also for general image and 2D data analysis.

  674 weekly downloads
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  Gnuplot.py

  A Python interface to the gnuplot plotting program.

  401 weekly downloads
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  Scikit Learn

  Machine Learning framework in Python

  601 weekly downloads
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  QtiPlot

  QtiPlot is a free (GPL), user-friendly, platform independent data analysis and visualization application similar to the non-free Windows program Origin.

  714 weekly downloads
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  owfs and owhttpd

  Easy way to use the 1-wire sensors like temperature, voltage and more.

  306 weekly downloads
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  The Timeline Project

  The Timeline Project aims to create a free, cross-platform application for displaying and navigating events on a timeline.

  325 weekly downloads
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  GPicSync

  Automatically geocode pictures from your camera and a GPS track log. Changelog: http://code.google.com/p/gpicsync/wiki/ChangeLog Screenshots: http://code.google.com/p/gpicsync/wiki/ScreenShots

  295 weekly downloads
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  Grassroots DICOM

  Cross-platform DICOM implementation

  283 weekly downloads

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