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Off the hook Compatible with Firefox 57+

Phishing Detection Addon.

Not yet rated
16 users

Off-campus proxy (MUN) Requires Restart

Get pages using Memorial University library's off campus proxy. This add-on is of interest only to patrons of Memorial University libraries.

Not yet rated
5 users

Offcloud.com Compatible with Firefox 57+

Allows you to take any link & fetch its data, either by directly downloading it, backing it up or transferring it to a third party.

Rated 1 out of 5 stars (1)
178 users

offensiveX Requires Restart

Allows native rightclick functionality to rehost images at http://upload.offensivex.com

Not yet rated
1 user

Offers Olymp Compatible with Firefox 57+

OffersOlymp ist ein kostenloses Browser-Addon, das dir aktulle Rabatte, Gutscheine und Aktionen deiner Lieblings-Online-Shops direkt im Browser anzeigt.

Rated 3 out of 5 stars (9)
4,691 users

Offers.com Compatible with Firefox 57+

Notifies you when there are money-saving offers available for the site you're currently browsing. Click the notification to go directly to the merchant's page on Offers.com and view all the available offers, coupons and promotions!

Rated 5 out of 5 stars (11)
1,367 users

Office 365 Login

This extension gets you directly to your organization's login page.

Not yet rated
201 users

Office 365 Mail Notifier Requires Restart

This extension notifies you when new messages arrive in your Office 365 mailbox.

Rated 3 out of 5 stars (7)
959 users

Office Browsing History Compatible with Firefox 57+

Record and remotely check browsing history, even in private mode.

Not yet rated
2 users

Office online OfficeWork for XLS DOC and PPT Compatible with Firefox 57+

Create and edit DOC, XLS and PPT files with an Office Suite online

Not yet rated
174 users

Office-Online

A basic office online addon

Rated 4 out of 5 stars (15)
2,538 users

OfficeMA Timesheet Timer

An easy to use cloud based task timer to track your OfficeMA Timesheet tasks directly from Firefox.

Not yet rated
7 users

Official Chris & Alex Election Simplifier Compatible with Firefox 57+

Replaces names of all major 2016 US Presidential Candidates with 'Chris & Alex'. Because "Two Heads Are Better Than One!"

Not yet rated
0 users

Official Furthia High Toolbar Requires Restart

A toolbar I created for the Furthia High comic website. has now become the official toolbar as of version 2.0, comic owned by QuetzaDrake

Not yet rated
3 users

Official Kutless Theme and New Tab King extension Requires Restart

The Official Kutless theme and New Tab King extension

Rated 5 out of 5 stars (2)
0 users

Official Media Bias Fact Check Icon Compatible with Firefox 57+

This extension shows an icon denoting the political bias for the current page.

Rated 4 out of 5 stars (3)
137 users

Official My JDownloader AddOn

Integrate 'My JDownloader' into your Firefox browser

Rated 3 out of 5 stars (25)
11,518 users

Offline Page validator Requires Restart

Submits the current open page to the W3C validation tool, even if the page is on a non-public server, a local file, requires login, etc...

Rated 2 out of 5 stars (2)
0 users

Offline QR generator

a basic add-on to generate QR code on html5 canvas

Rated 5 out of 5 stars (26)
1,652 users

Offline Restart Buttons

Quick offline switch and restart.

Rated 5 out of 5 stars (7)
594 users