Top-Rated Extensions

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Nostalgy Requires Restart

Keyboard shortcuts to change folder, move/copy messages, with folder name auto-completion.

Rated 5 out of 5 stars (144)
8,839 users

Browser Backgrounds Requires Restart

Browser Backgrounds is the new Firefox extension that lets you install backgrounds directly on your browser.

Rated 5 out of 5 stars (41)
4,787 users

Password Tags Requires Restart

Adds metadata and sortable tags to the password manager.

Rated 5 out of 5 stars (13)
1,248 users

Extension Auto-Installer

Important note: This extension will not work in Firefox 57 and above. Providing this functionality in Firefox is no longer possible, the extension is discontinued.

Rated 5 out of 5 stars (48)
1,650 users

PlayFlash 64bit Requires Restart

Flash player plugin - unofficial xpi repack for 64bit browsers. Use when official plugin installer is not suitable. All binary files are copyrighted by their authors and distributed for free.

Rated 5 out of 5 stars (27)
5,401 users

QuickNote Requires Restart

A simple note-taking extension.

Rated 5 out of 5 stars (193)
22,072 users

Rai Smooth Streaming Player (raismth) Requires Restart

Rai.tv live channels, vod and replay contents w/o *light (Silverlight/Moonlight)

Rated 5 out of 5 stars (33)
1,498 users

Transliterator

As-you-type phonetic conversion of text from one alphabet to another, as well as transliteration/detransliteration of selected text anywhere within documents. Supports multiple languages and custom transliteration schemes.

Rated 5 out of 5 stars (88)
4,515 users

IMAP Received Date Requires Restart

Make the “Received” column in IMAP folders show when messages were actually received.

Rated 5 out of 5 stars (10)
2,380 users

Select like a Boss

Select link's text just like a regular text (like in Opera'12 browser) - Select like a Boss ;)

Rated 5 out of 5 stars (43)
2,128 users

Simple Locale Switcher Requires Restart

An easier management of the user interface language

Rated 5 out of 5 stars (12)
32,205 users

N0HR Propfire Requires Restart

HF radio propagation status displayed in your browser status bar. Shortwave radio enthusiasts, ham radio operators and others can use this to monitor solar conditions that impact radio propagation. Usage, updates and support can be found at...

Rated 5 out of 5 stars (20)
645 users

WorldIP - Geo Add-on with Security Features Requires Restart

Professional Geo Add-on with security features and advanced network tools. Anti-phishing. Protection against DNS spoofing and fake sites. All DNS records for domain. The real location of web server, country flag, extended information about datacenter

Rated 5 out of 5 stars (122)
17,793 users

lolifox - Fierr MOD Requires Restart

Replaces the error page with a lolifox appearance with additional features.

Rated 5 out of 5 stars (34)
1,929 users

Mail Merge Requires Restart

Mass Mail and Personal Mail

Rated 5 out of 5 stars (150)
64,046 users

DSLR Notifier 2

Updated version of the original DSLR Notifier, created by Ryan Flint, which enables members of Dsl/Broadbandreports.com to keep tabs on their instant messages and updated...

Rated 5 out of 5 stars (9)
48 users

Extended Link Properties + (obsolete) Requires Restart

This application extends the Link Properties and displays File Size, Last Modified Date, Content Type and HTTP Header of a link...
Warning: developing discontinued, see least

Rated 5 out of 5 stars (11)
424 users

DownThemAll! AntiContainer Requires Restart

Make the resources behind container pages easily downloadable by DownThemAll!

Rated 5 out of 5 stars (36)
50,079 users

No Tooltip Timeout Requires Restart

"title" tooltips won't disappear anymore

Rated 5 out of 5 stars (33)
31 users

Session Manager

Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.

Rated 5 out of 5 stars (750)
230,070 users