Docs Online Viewer
Docs Online Viewer provides a convenient method to open online documents/files of any format (PDF, DOC, DOCX, XLS, PPT, RTF, ODT, ODP, CSV etc.) using Google Docs & Zoho Viewer directly in your browser eliminating the need of any additional plugins.
3,151 users
Big Navigation
enlarging the navigation links on the pages
24 users
Reader
Reader is the ultimate Reader tool for Firefox.
5,364 users
AutoAuth
AutoAuth automatically submits HTTP authentication dialogs when you’ve chosen to have the browser save your login information.
1,323 users
Word Count Tool
A word counter that counts the number of words, characters without any extra clicks. Just select the text and right click to select the context menu to invoke the report. It gives detail report about the numbers words, characters, sentences...
703 users
Reddit Enhancement Suite
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
276,367 users
Scroll To Top
A plugin to scroll to top and vice versa of a window. It is really beautiful and is highly customizable..
2,094 users
Sort Tabs by URL
Press (command or ctrl)-shift-o to sort all the tabs alphabetically by URL , the button in the toolbar, the toolbar context menu or the tools menu items.
774 users
Most Recent Tab - Keyboard shortcut for last tab
Adds a keyboard shortcut (default: control-shift-1 / cmd-shift-1) and toolbar button to quickly go back to the previously selected tab. Useful to alternate between two tabs and to easy go back to your last tab if you switch to another briefly.
407 users
Bloody Vikings!
Simplifies the use of temporary e-mail addresses in order to protect your real address from spam. Supports inter alia 10minutemail.com and anonbox.net.
Add-on note
Or use the addon Gish It(or GishIt's bookmarklet). Gish it is the best temporary email service out there. A pity it isn't a part of the Bloody Vikings addon. The Bloody vikings addon though offers you 10 free temporary email services to choose from.
4,030 users
Auto Form
Copy/Paste all fields from a web form (with hotkey or contextual menus)
Add-on note
The options are in French. But if you are willing to overlook that, this is a great addon. Just remember Alt+f to copy all forms on a page, Alt+v to paste the copied forms to another similar form anywhere else. Those are the 2 most important of the 5 hotkeys it gives you. If you want to change the hotkeys, go to options look for Alt+f and At+v and change them as you like.
950 users
uniqtabs (Unique Tabs)
Sorts tabs and removes duplicates.
Add-on note
A new addon. Therefore a bit buggy. But it has some unique functions. I have kept it in the list hoping that it would improve with time as the developer fixes it.
32 users
All Tabs Helper
Provides list-style menu to do closing, loading, unloading, moving of single/multiple tabs. Search tab titles/urls, search content in all loaded tabs, visited tabs history, find duplicate tabs. (Window-centric except moves tabs across windows)
Add-on note
Potentially very very useful. It is a new addon at the time of writing(using on FF19), therefore is a buggy addon. Hoping that it will improve with further updates.
2,660 users
Tabhunter
Find tabs in Mozilla-based browsers easily
Add-on note
Can search for text in all open tabs. Other addons that can do this are "Fastest Fox" and "Find in Tabs". Fastest Fox does this most reliably, but is has many more features than the one described here, you may not need all those features, but it is restartless. Using the addon Togglify, you can enable it quickly when you need it. Find in Tabs is no longer developed, but among the comments section of the addon, you can find a patched version that can be downloaded from non-mozilla websites and works with newer versions of Firefox. I personally prefer Tab Hunter.
869 users
Pinned Google Calendar
Go to the pinned Google Calendar tab. If it doesn't exist, it's created.
9,629 users
Image Search Options
A customizable reverse image search tool that conveniently presents a variety of top image search engines.
44,411 users
TagSpaces Web Clipper
This Add-on will help you to save web pages or parts of them as files, for later reading or organizing with app such as TagSpaces' desktop. Beside that you can take screenshots from the current page or create a bookmark for it.
Add-on note
A file manager within Firefox.
537 users
Video Resumer
Automatically resumes YouTube videos from where you played them last. Without this extension, for example, when you click through YouTube videos, back and forth, they always start from the beginning.
3,036 users
IpProtocols
Converts IP addresses into clickable links for use with VNC, SSH, Ping, Telnet...
419 users
FoxReplace
Lets you replace text in web pages. You can define a substitution list and apply it automatically or at your own discretion, or make individual substitutions. You can use this as a filter, or just for fun :)
7,017 users
Google Date Keeper
++ Date @ Google Search
65 users
Google Translator for Firefox
With this addon you can translate any text to your own language with one click or hot-key. You can either translate the selected text, this way the translated text will overwrite the original selected text, or you can translate the full page too.
236,280 users
Diccionario español México
Diccionario para México.
23,173 users
Link Properties Plus WE
Provides extended link properties: size of linked file, last modified time, etc.
193 users
Do Not Auto Activate Pinned Tabs
This addon allows you to separate app (pinned) tabs from normal tabs.
45 users