Google Product Search
(formerly known as "froogle").
Editors
An excellent (free) editor for Windows can be found
at EditPadPro.com.
Graphics Tools
ImageMagick a comprehensive
(and free) image conversion package for Windows. Somewhat hard to
use, with a command line interface. It will convert gif to
postscript....
XnView a simple to use image
manipulation software program.a This program can take snapshots
of windows, which can then be cropped to a desired size.
Will not write postscript files unfortunately!
Screen Capture Utilities
Screen Grab Pro Freeware screen capture program. Easy to use, too.
A free reader for Mathematica,
MathReader,
is also available. You can view and run previously generated workbooks,
but can't create new one ones. After you download the
reader, go visit their
library of resources and tutorials.
A web-based front end for Mathematica computations can be seen
here
Computer Algebra Systems
A free downloadable version of Maple V R4 (
mvr4demo.exe) is available from Waterloo Software
here
(or here).
Bear in mind that it only implements a subset of Maple
commands, and does not (for example) allow you to define procedures.
Nevertheless, as far as demonstrating the capabilities of Maple
it is good.
MuPad is no longer a separate CAS package. It has been acquired
by MathWorks (ie MatLab) to replace Maple as their internal
symbolic engine. An old version of
MuPad Lite is still available.
A free 30-day version of Maple 16 for Windows can be found
here .
You can get a free 30 day trial for
MatLab.
Fill out the required information to request the 30-day trial version.
Unfortunately, it is no longer available to students....
You can get a free 15 day trial for
Mathematica 8 by filling out a request form.
You can request a free 30 day trial of
MathCad
[search their web site].
A free (GNU license) clone of Matlab called
Octave is available. It is now available with a
simulink capability.
A free clone of Matlab called
SciLab
is available
in pre-compiled binaries for Windows and Unix.
A free (GNU license) clone of Macsyma, called
Maxima
is also available. There are Linux versions, and a link to a
Windows executable.
Another computer algebra system, called
Reduce
is available.
Yet another CAS packages, called
Derive
is available for download. Texas Instruments uses this system
on their graphing calculators.