To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!Close
Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
FF4 compatible Rated 5 out of 5 stars
To work with FF4 use this beta from developer:
The newest version is always at http://newsfox.mozdev.org/installation.html#newest.