Scientific

• vofce
  vofce is a (hold your breath, surprise!) graph plotting tool. It's multiplatform, easy to use and has many exporting capabilities. ...
  
• Mceitor
  Mceitor is a program to quickly and easily compute functions of matrices. ...
  
• bcalc
  bmcalc is a calculator for your GTK+-Desktop. It is released under the GNU General Public License. The special thing about bmcalc is that it supports many many functions. Well, not yet, I have to do ...
  
• Fung-Calc
  Fung-Calc is a free, open source advanced, yet easy to use, graphing calculator for Linux using Qt. It plots several types of 2D and 3D graphs. It combines the use of advanced mathematical features a...
  
• LibTomMath
  LibTomMath provides highly optimized and portable routines for a vast majority of integer-based number theoretic applications (including public key cryptography). ...
  
• Mathomatic
  Mathomatic is a small, portable, general purpose symbolic math program that can solve algebraic equations. It can do standard, complex number, and polynomial arithmetic. It is designed to be as gener...
  
• hacker's calculator
  The Hacker's Calculator is a simple integer calculator based on C syntax with support for hex and octal numbers. ...
  
• MuPAD
  GUI o text-oriented software for sybolic and exact algebraic computations with graphs and TeX output. For non-commercial or education use is free (The company sends you via e-mail your own serial nu...
  
• Easy Funktion
  Easy Funktion is 2D function plotter software with an equation solver. It has an office-like GUI frontend and features a built-in pocket calculator, calculating with complex numbers (with special ext...
  
• ConvertAll
  ConvertAll is a unit conversion program. ...
  
• NumericalChameleon
  The NumericalChameleon converts numbers with a precision of up to 1000 significant figures. It supports more than 3200 units in 82 categories, including lengths, areas, volumes, durations, bits & byt...
  
• Genius Math Tool
  Genius is a calculator program similiar in some aspects to BC, Matlab or Maple. ...
  
• Rascal
  Rascal, the Advanced Scientific CALculator, is a platform independent modular calculator. Based on modules for integer, doubles, strings, vectors and matrices it can be easily extended with existing ...
  
• QFractalViewer
  QFractalViewer is a cross-plattform light-weight but threaded mandelbrot set viewer. ...
  
• Kalculator for KDE
  Kalculator for KDE is a simple GUI calculator for evaluating math expressions in the KDE Linux environment. ...
  
• calc
  The calc command may be used to do simple integer calculations or to convert numbers from one radix to another. ...
  
• SiCalc
  SiCalc is a simple scientific calculator written in Java. It supports trigonometric and hyperbolic functions. It can be run as Java application or as an applet inside a browser. ...
  
• gtk-perl calculator
  The GTK/Perl Calculator has some business functions and can plot graphics in an adjustable size window. ...
  
• rpcCalc
  a console version of the rpCalc RPN calculator. It is based on Python's curses module, so it starts quickly, has few dependencies, and runs in any console or terminal ...
  
• Archimede
  The most easy and complete calculator in Internet. ...
  
• rCalc
  a symbolic calculator for GNOME, featuring Standard infix expressions and variables ...
  
• quickcalc
  Quickcalc is a basic and simple console calculator which allows some symbolic calculations and handles various mathematical functions. ...
  
• reken
  a commandline calculator with the ability to define variables and functions and to run on a input file, or to use an input file for some default definitions ...
  
• Stepulator
  Stepulator is an RPN scientific calculator for GNUstep. ...
  
• Octave
  GNU Octave is a high-level language, primarily intended for numerical computations. It provides a convenient command line interface for solving linear and nonlinear problems numerically, and for perf...