→ is a free PDF reader;

Dev-C++ → is a C/C++ free compiler;

Firefox → is the popular free web browser of Mozilla;

FSF/UNESCO Free Software Directory → directory full of free software (GNU General Public License);

Ghostscript, Ghostview and Gsview → are free software to manage PS-files;

GNUPlot → is a free software to plot graphs;

→ to explore the Earth with satellite imagery;

Google SketchUp → is great to easy design 3D models;

GraphCalc → is a graphic calculator;

 → is a C++ library of math, signal processing, speech processing, and comm. classes and functions;

MiKTeX → is a TeX update for Windows Operating System;

Numerical Recipes → mathematical libraries in C, Fortran 77 & 90 (books online);

→ is a free software like a multiplatform and multilingual office suite;

→ free image editing;

→ is a free software MatLab-like;

→ is a free LaTeX editor;

TextEdit → is a free text-editor;

Thunderbird → is the popular free e-mail application of Mozilla.

Avast! → is an antivirus. The home edition is free;

Ad-Aware 2007 Free → is a free and good anti-spyware;

Ccleaner → is a freeware system optimization and privacy tool;

RealVNC → is a remote control software;

SyncBack → is a free backup and synchronization software;

UltraVNC → is a remote support software.