YouTube to MP3

Add the option to download music to YouTube

EPUBReader

Enjoy reading eBooks on your browser

Lightning

Thunderbird add-on that adds personal organizer functions to the application

Faceplus

Express yourself with emoticons on Facebook

Mozilla F1

Share from a button on your browser

HTTPS Everywhere

Browse in a more secure manner with the HTTPS protocol

Timeline Remove

Disable the new Facebook Timeline

Flagfox

Find out the location of a web server

Privacy Badger

Block adverts that violate your privacy

Greasemonkey

Download scripts to modify any web page

Boomerang for Google Mail

Schedule when to send emails

Print Edit

Customise the aspect of a web before printing it

feedly

RSS feed reader

Read it Later (Pocket)

Save whatever you don't have time to read

Foxtana Pro

Have Cortana search Firefox

AniWeather

Firefox add-on to get to know the weather forecast

Way

A game to learn how to communicate

Murfy Maths

The most entertaining way to study maths

Omnitux

Great way for children to learn while playing

Childsplay

Learning and entertainment all in one

Sebran

Brilliant way to learn letters and numbers

Monkey Tales

Have fun while you learn

NagiQ

Recover all the mystical letters

Number Race

An entertaining way to learn numbers

CubeTest

Exercise your mind by finding out what cubes are identical

Google Blocks

Blocks by Google lets you create and design 3D objects by means of virtual reality

FindThatWord

A word search puzzle editor

Privates

Sexual education as a platform shooter game