WinArchiver

Comprehensive tool to work with compressed files

ZipGenius

All the necessary tools to create, open and administer compressed files

WinAce

The best compression application for ACE files

FILEminimizer Office

Reduce the size of your Office files up to 98%

BitZipper

Compressor with support for many formats

8 Zip Lite

Compressor compatible with several formats

ArcConvert

Transform a file's compression format

KuaiZip

A free multiformat compressor

UPX

Compress your executable files

DataNumen RAR Repair

Repair RAR and SFX files

WiZ

Free lightweight ZIP compressor

gzip

Free compressor that has been ported from Linux

Hamster Free ZIP Archiver

Quickly compress and extract your files

Bandizip

A very easy-to-use compressor

Free RAR Extract Frog

Decompress your RAR file free

PowerArchiver

One of the most powerful multiformat compressors

Maple

Solve complex mathematical operations

Statgraphics

Carry out statistical analyses on your data

Minitab

One of the best statistical calculation programs

MathType

Complete mathematical equation and formula editor

Mathcad

Software for engineering calculations

PASW

One of the most powerful statistic solutions on the market

MATLAB

Maths software tool for PC

Derive

Powerful tool for symbolic mathematic calculations

Microsoft Mathematics

Solve mathematical operations with this free tool

IBM SPSS Statistics

Poweful software to collect and analyze statistical data

WinPlot

Generate 2D and 3D graphics

Mathematica

Platform for computational development

GeoEnZo

Digital board to teach and learn maths

GeoGebra

Software to learn maths at all levels

Octave

Applied calculus software very similar to MATLAB