Youtube on speeddial
Shows videos from Youtube subscriptions on speeddial
Old-styled notes in your extensions sidebar. http://fidel.im/classic-notes?en
Speed Dial for Gmail
A minimal SpeedDial extension to show the unread email count and title.
Find logins/passwords for websites that force you to register.
With Google™ Calendar you can keep track of life's important events all in one place.
Scroll To Top Button
Adds a scroll to top and/or bottom button.
Adds notes managed by tagging without hierarchized tree to sidebar.
Group Your Tabs
Group opened tabs in a pretty list
Yandex.Mail for Speed Dial
Notifications about new messages and convenient access to your inbox.
Simple world time in speed dial.
Google™ Text-to-Speech is a text to speech engine with natural sounding voices.
Mobile version Inoreader.com on sidebar (not official)
Simple To-Do List
Simple and minimalistic extension for task management.
Temporary list of sites you want to visit later.
Yandex.Traffic for Speed Dial
Traffic in your city.
Email Notifier is a notification extension that works with Gmail™, Yahoo! Mail, Live Mail, iCloud Mail, Mail.com and AOL Mail
No more duplicated tabs!
It will not allow for duplicated tabs in your tabs bar. Less tabs will give you better performance of your browser and easier overview of the tab bar.
Soda PDF Online Services
Your Online PDF Tools
Open with Google Drive Viewer
Opera extension to open many file formats online using Google Drive Viewer. Open online Office documents, PDF, ZIP, RAR, HTML, PSD etc.
All Image Download. Image Zoom. Expand Thumbnail and Audio and Video. Expand the short URL. Generate a link from text. Override Referer. Extend BBS. etc...
The missing bookmark manager for hte Opera Browser
Google Tasks on sidebar (not official)
vTabs - Opera
Vertical panel with tabs
Automatically copy selected text to the clipboard. Has options for copying as plain text; including the URL in the copied text; etc.
GC Little Helper
Some little things to make life easy (on www.geocaching.com).
XBMC Remote Control
XBMC Remote Control for Opera
Allows to open links from selected area.
Saves bookmarks to your personal cloud.
Add back the black menubar below the omnibox.
Simple blogging client for WordPress blogs.