OpticWhite
OpticWhite is pleasing to the eye and allows you to easily optimize the navigation through tabs and bookmarks.

OpticGreen
OpticGreen is a dark background theme that colors the texts of your tabs in a  green color that is pleasing to the eye and, in ...

OpticAmber OrangeCloud
The OpticAmber OrangeCloud theme installs a picture with stormy clouds in the new tab window, which is both relaxing and easy on the eyes.

OpticAmber SepiaCat
The OpticAmber SepiaCat provides you a great navigation method for your tabs and bookmarks and, in addition, it enhances the appearance of your browser.

Oklohoma Sooners Browser Theme
The Oklohoma Sooners Browser Theme colors your browser in the powerful red  that defines the look of your favorite team.

OnePlace Dashboard
OnePlace Dashboard is an AIR-based app that provides you great team connectivity, communication and collaboration features.

Old Google Search
The Old Google Search extension removes the ads and the sidebar and lets you focus on what is truly import while you a ere browsing ...

Orangered
Orangered is a small, easy to use and open source Mac OS X application that runs in the background and allows you to keep up ...

One Window
In accordance with the setttings that you have chosen in the Options page, the One Window extension will automatically change the place of the new ...

Omakase Links by Amazon.com
Omakase Links by Amazon.com automatically displays the products and the content that you are most likely to buy in a pop-up, on the top right ...

OpticAmber CSunset
The OpticAmber CSunset theme combines an original image with a beautiful  Caribbean sunset and a high contrast amber text for obtaining a special optical effect.

OnniBuchtProductions
The OnniBuchtProductions extension installs a patterned, colorful 8bit picture in the new tab window that was inspired by the 8bit albumart.

OpticAmber Clematis
The OpticAmber Clematis add-on installs a background image with a beautiful flower in the new tab window and colors the top of your browser in ...

One-Click Installer for WP
Install plugins or themes on your self-hosted WordPress blog with a single click (needs the related WP plugin to work; not intended for Wordpress.com) .

OpenWith
Are you tired of looking over and over again for all the html/php/js-files you are working on in your web application? Then OpenWith can help ...

OutlookMsg Viewer
Outlook MSG Viewer is a Mac-only program which allows you to view Microsoft Outlook .MSG files seamlessly inside your Mac mail client (Apple Mail, Entourage, ...

Open All in Tabs
The Open All in Tabs extension provides you a toolbar button for displaying  all your bookmark's folders.

Old Google Image Search
The Old Google Image Search is for the nostalgic users as it reverts the Google Images new page layout with the old layout.

Optus Usage Meter
The Optus Usage Meter extension was inspired by the Firefox extension with the same name and it basically displays in a pop-up the broadband Internet ...

OpenInTab
OpenInTab lets you open a bunch of links with a click of the mouse.

OverbiteFF
OverbiteFF is a cross-platform Mozilla Firefox add-on that replaces and enhances Firefox's gopher support with an attractive and customizable interface, improved protocol support (including CSO/ph), ...

Oregon State Mobile
Oregon State Mobile This is a simple extension that opens the OSU mobile in a pop-up window, on the top right corner of your browser.

Ostrich for Safari
Ostrich for Safari lets you compose new messages, share links, get notified when new tweets are sent to you and, at the end, to enjoy ...

OpenAttachmentByExtension
OpenAttachmentByExtension is an extension that allows you to open directly an attachment with a program associated to the file extension, not considering the mimetype indicated ...