Picnik

A photo editor for Firefox

InfoRSS

Keep up with what's going on while you browse

EPUBReader

Enjoy reading eBooks on your browser

Hotmail for Thunderbird

Access Hotmail from Thunderbird

Read it Later (Pocket)

Save whatever you don't have time to read

Metal Lion Vista

Firefox with the graphical interface of Windows Vista

Free YouTube Uploader

Upload several videos to YouTube simultaneously

Flagfox

Find out the location of a web server

Greasemonkey

Download scripts to modify any web page

BetterSearch

Improve the information offered by Internet search engines

Mozilla F1

Share from a button on your browser

ArchView

Look inside ZIP, RAR or ISO files before downloading them

Facebook Toolbar

Integrate Facebook into Firefox

Google Icon

Show the web's icon in Google's results

Print Edit

Customise the aspect of a web before printing it

Faceplus

Express yourself with emoticons on Facebook

Vista OS X

Make Windows Vista look like Mac OS X

Isso Pack

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

Powershell Glass

Make your powershell and cmd windows transparent with Aero

TranslucentTB

Take control of your taskbar

8 Skin Pack

Transform Windows 7 into Windows 8

UXTheme Multi-Patcher

Enjoy new desktop themes for your Windows

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

Seven Transformation Pack

Transform Windows XP into Windows 7

Suitcase Fusion

Manage your PC's fonts

WindowBlinds

Change the aspect and appearance of Windows

WinFlip

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

SkyFonts

Download the fonts of Google Fonts

Folder Colorizer

Give Windows Explorer some color

Royale Remixed

Change the aspect of your Windows for a more elegant one