Windows Live Mail

Microsoft's multi-account email client

Turbo Mailer

Send mass emails

Spark

Complete mail client compatible with different services

Thunderbird Portable

Use this email manager on any PC with a USB port

Outlook Connector

Use your Hotmail accounts straight from Outlook

IncrediMail

Customize your email's appearance and give your friends a surprise

Yahoo Mail

Access to your Yahoo email account

ICQ

Complete instant messaging client integrated with social networks

Inky

Receive all your emails in a single client

Microsoft Outlook

Microsoft's email client

Zimbra Desktop

Manage all your accounts from the same application

Stellar Converter for OST

Convert your Outlook emails to PST format

Mail, Calendar, and People

Plan your day and keep in touch

Mailspring

Mail client to boost user productivity

Mail Bomber

One of the best massive email delivery programs

Free Email Extractor

Easily gather email addresses

8 Skin Pack

Transform Windows 7 into Windows 8

Powershell Glass

Make your powershell and cmd windows transparent with Aero

WinFlip

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

Seven Transformation Pack

Transform Windows XP into Windows 7

Folder Colorizer

Give Windows Explorer some color

Isso Pack

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

WindowBlinds

Change the aspect and appearance of Windows

SkyFonts

Download the fonts of Google Fonts

Snow Transformation Pack

Enjoy the aesthetics of Snow Leopard while working on Windows

Windows 8 Transformation Pack

Transform your user interface into the Windows 8 interface

UXTheme Multi-Patcher

Enjoy new desktop themes for your Windows

Vista OS X

Make Windows Vista look like Mac OS X

Suitcase Fusion

Manage your PC's fonts

Royale Remixed

Change the aspect of your Windows for a more elegant one

TranslucentTB

Take control of your taskbar