Up & Coming Extensions
Proxy Tool Requires Restart
Proxy Tool - Powerful, yet User-friendly proxy tool to manage your proxies and anonymity needs, including: 46M+ user agents (world's largest), 10 different spoofed HTTP referrers, auto-proxy rotation, plus many more. Developed by http://ProxyList.co
Finnish spellchecker Requires Restart
Finnish open source Voikko-spellchecker for Mozilla and needed libraries.
XHTML Mobile Profile Requires Restart
Firefox does not natively support the mime-type application/vnd.wap.xhtml+xml. This is one of the possible mime-types for XHTML Mobile Profile. This addon adds support for this mime-type.
wmlbrowser Requires Restart
Simulate WAP browsing by viewing WML (Wireless Markup Language) pages.
Auto delete cookies and localStorage objects as soon as they become unused
Reinstates the extensions.checkCompatibility preference without respect to the current application version.
Lets the user direct the submission of a form to a new tab or window. [Bug #17754]
Ad Blocker lets you block all ads, tracking & malware from the web world. It is an effective solution to browse the web without offensive and annoying ads you hate to see.
Keep your menus in check by filtering out items you never use.
Speed Dial & Start Page with flexible layout for fast access to sites via visual bookmarks
Copy Pure Text Requires Restart
Allows to copy selected text as plain text by adding a 'Copy as Text' menu item to context menu.
Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.
ToggleReplied Requires Restart
Enables toggling of replied, forwarded, and redirected states of messages.
Autoplay Toggle NonRestartless Requires Restart
This extension performs the same function as Autoplay Toggle, but as a legacy overlay extension. This should work in cases where Autoplay Toggle doesn't. SeaMonkey and Pale Moon are supported.
Add menu commands for replying to multiple messages at the same time.
Composer Open In Requires Restart
Adds a toolbar button to Composer to open the current file in another editor or browser.
fixedzoomthumb Requires Restart
Shows Desktop size image when you hover over a thumbnail .Works with many sites including Amazon, Facebook, Flickr, YouTube.
Saved Pages Conversion Wizard Requires Restart
Convert previously saved pages between MAFF, MHT, and HTML with a separate support folder.
This functionality is also available as part of the Mozilla Archive Format add-on.