From MozillaZine Knowledge Base
The following browser extensions may be helpful for some users. They are not part of Firefox; you will need to install them separately. If you have a problem with a browser extension, please contact the extension author.
- Mozilla/Firefox Accessibility Extension - View and navigate web content based on structural markup.
- Menu Editor - Hide unused menu items.
- keyconfig - Assign keyboard shortcuts to any command or menu item.
- Mouse Gestures and All-in-One Gestures - Execute common commands by drawing mouse gestures over the current page.
- NextPlease - Assign keyboard shortcuts to jump to next and previous links on search engine results pages and other sites.
- FlashBlock - Prevent Flash content from loading until you click it.
- NoScript - Prevent JavaScript, Java, and other plugins from loading except on domains you choose.
- Accessibar - Control of Web page appearance plus optional screen reader.
- Tab Mix Plus - Fine-tune tabbed browsing.
- PopupSound - Play a sound when a popup window is blocked.