Free
Crash Firefox Intentionally
Tool for Testing Firefox Crash Reports
Your download will start automatically. If it doesn't, restart it.
Lunascape: Versatile Browser Add-on for Windows
Download from Firefox using your favorite manager
Stream your favorite US content with this Firefox add-on
A free app for Windows.
Enhance Your Browsing Security with Privacyfix
Avoid losing the page you're on when pressing the backspace key
Instant messaging built right into Firefox
Gladinet: A Versatile Windows Tool for Browsers
Upload files from Firefox using a friendly interface
Enhance Browsing Efficiency with Mouseless Browsing
Explore the Features of MushroomKingdom