UltimateZip

Powerful tool to decompress any sort of file

UPX

Compress your executable files

Free RAR Extract Frog

Decompress your RAR file free

KuaiZip

A free multiformat compressor

8 Zip Lite

Compressor compatible with several formats

ArcConvert

Transform a file's compression format

PowerArchiver

One of the most powerful multiformat compressors

WinAce

The best compression application for ACE files

FILEminimizer Office

Reduce the size of your Office files up to 98%

gzip

Free compressor that has been ported from Linux

DataNumen RAR Repair

Repair RAR and SFX files

BitZipper

Compressor with support for many formats

WinArchiver

Comprehensive tool to work with compressed files

Hamster Free ZIP Archiver

Quickly compress and extract your files

Bandizip

A very easy-to-use compressor

WiZ

Free lightweight ZIP compressor

Isso Pack

Convert your Windows XP in Mac OS X, Vista or Windows 7

Seven Transformation Pack

Transform Windows XP into Windows 7

Windows 8 Transformation Pack

Transform your user interface into the Windows 8 interface

UXTheme Multi-Patcher

Enjoy new desktop themes for your Windows

TranslucentTB

Take control of your taskbar

Powershell Glass

Make your powershell and cmd windows transparent with Aero

Snow Transformation Pack

Enjoy the aesthetics of Snow Leopard while working on Windows

WindowBlinds

Change the aspect and appearance of Windows

Folder Colorizer

Give Windows Explorer some color

Suitcase Fusion

Manage your PC's fonts

Royale Remixed

Change the aspect of your Windows for a more elegant one

WinFlip

Switch from one application to another with the Vista 3D effect

Vista OS X

Make Windows Vista look like Mac OS X

SkyFonts

Download the fonts of Google Fonts

8 Skin Pack

Transform Windows 7 into Windows 8