Scientific

• xd3d
  xd3d is a simple scientific visualization tool. It can plot 2D and 3D meshes, with shadowing, contour plots, vector fields, iso-contour (3D), as well as 3D surfaces z=f(x,y) defined by an algebraic e...
  
• gretl
  This is excelent statistical analysys tool. By excelent I mean: profesors and doctors in econometric use it to do science. ...
  
• g3data
  g3data is a program for extracting data from graphs (i.e., scanned graphs from scientific publications). It can read many different image formats and outputs the extracted data through stdout or to a...
  
• ploticus
  PLOTICUS is a command line utility for creating bar, line, pie, boxplot and other types of charts and plots. ...
  
• JAgents
  JAgents is a tool for simulating dynamics of selfish users in traffic networks like the Internet. ...
  
• gnuplot
  gnuplot plots 2d and 3d graphs, from a data file or with a formula. It has an interactive mode with online help, or it can be used non-interactively. gnuplot does function fitting to data sets, and i...
  
• R project
  R is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T...
  
• IrcMap C2
  IRcMap C2 is a Java applet to show tree structures such as networks and data structures. ...
  
• Quickplot
  Quickplot is a fast, interactive 2D plotter with infinite zooming, value picking, pipe input, and unlimited plots displayed. It is meant for looking at your data quickly and (less importantly) making...
  
• Kst
  A really cool plotting and data viewing program. ...
  
• CoaSim
  CoaSim is a tool for simulating the coalescent process with recombination and gene conversion under the assumption of exponential population growth. ...
  
• tablix
  Tablix is a high school timetable generator. It uses a coarse-grained parallel genetic algorithm to construct sensible timetables from XML-formated school information files. ...
  
• OpenGrade
  OpenGrade is software for teachers to keep track of grades. It can put the students' grade reports on a Web server and allow the students password-protected access to them. ...
  
• pychart
  PyChart is a Python library for creating high-quality Postscript, PDF, or PNG scientific charts ready for publishing. It supports line charts, bar charts, range-fill charts, and pie charts. ...
  
• MayaVi
  MayaVi is a free, cross platform, easy-to-use scientific data visualizer. It provides a powerful GUI to ease the visualization process. It is written in Python and uses the Visualization Toolkit (VTK...
  
• kstars
  KStars is a Desktop Planetarium for KDE. It provides an accurate graphical simulation of the night sky, from any location on Earth, at anydate and time. The display includes 40,000 stars, 13,000 deep...
  
• Celestia
  Celestia is a real-time space simulation that lets you experience our universe in three dimensions. Unlike most planetarium software, Celestia doesn't confine you to the surface of the Earth. You can...
  
• Sun Clock
  This program is a clock that shows which portion of the Earth's surface is illuminated by the Sun. There is a large choice of vector fully scalable maps. Sun Clock has an unique range of options incl...
  
• Planets 3D
  A graphical tool for the simulation of the solar system, based on gravity power calculations. ...
  
• Stellarium
  Stellarium is a free software available for Windows, Linux/Unix and MacOSX. It renders 3D photo-realistic skies in real time. With stellarium, you really see what you can see with your eyes, binocula...
  
• Ksetiwatch
  Ksetiwatch is a monitoring tool for the SETI@home distributed computing project. ...
  
• Nightfall
  Nightfall can produce animated views of eclipsing binary stars, calculate synthetic lightcurves and radial velocity curves, and eventually determine the best-fit model for a given set of observationa...
  
• Xplanet
  Xplanet renders an image of the earth into the X root window. All of the major planets and most satellites can be drawn, similar to the Solar System Simulator. Objects are time tracked. A number of d...
  
• Sky Charts
  This program enables you to draw sky charts, making use of the data in 16 catalogs of stars and nebulae. In addition the position of planets, asteroids and comets are shown. ...
  
• Xplns
  Xplns reproduces real starry sky on your display of X Window System. It calculates the position of many celestial objects (stars, galaxies, nebulae, constellations, planets, comets, etc.) very accura...