Extensions
YouWatch
Beta version - Mark already seen Videos on YouTube
ScribeFire
Un éditeur de blog facile à utiliser qui vous permet de poster sur tous vos blogs.
Violent monkey
Userscript support for Opera.
Disconnect Search
Search privately using your favorite search engine.
Cryptocat
Have encrypted, private conversations. Cryptocat is an open source encrypted instant messaging platform.
FastestTube - YouTube Video Downloader
Just install FastestTube and download any video from YouTube!
SoundCloud Button
Extension allows you to play/pause your SoundCloud stream using button. Do it faster by using context menu or shortcut Ctrl+Shift+C
Reddit Enhancement Suite
Reddit Enhancement Suite - a group of enhancements for browsing Reddit
F.B. Purity
F.B. Purity cleans up and customises Facebook, letting you filter out the junk you dont want to see
Clip To OneNote
Clip selected content to OneNote right from the context menu (Right Click Menu).
Smart RSS
RSS Reader for Opera 15+!
RSS Detector
RSS Detector for Smart RSS extension.
Site-specific Preferences
Edit preferences on a per-site basis
Tab Position Options
Tab Position Options
AlienTube (Beta)
Reddit Comments for YouTube
Last.fm Scrobbler
Scrobble music all around the web!
Yandex.Translate
Move the mouse pointer to the word written in a foreign language and it will be translated into English.
Yandex.Traffic
Traffic in your city.
FreeStyler
Styles and skins for all popular sites in the web
Outlook.com Speed Dial
Outlook.com Speed Dial extension shows you if you have new messages when you're logged in. Based on stormbreakerbg's Speed Dial for Gmail (http://bit.ly/1dVLC2R) and tombb's Outlook.com Notifier (http://bit.ly/17qEZ3D).
rikaikun
A port of rikaikun for Opera. Translate Japanese by hovering over words.
Accesskey Shortcuts
Shows the list of accesskey keyboard shortcuts of a webpage.
XTranslate
Easy translate text on web pages
qSnap: Screen Capture, Screenshot, Annotation
Get more out of your screen captures! Free - Cross Browser - Multiple Page Screen Capture - Rich Annotation - Awesome!
Nimbus Note
The easiest way to taking notes and clip text/pictures from Web pages in Google Chrome.
Nimbus Screen Capture
Capture Web page, a part of it or the whole browser window, edit screenshots and save the images to Local File or Google Drive.
The Weather
The current weather for where you are, right in your Speed Dial.
Mailto:
Open mailto: links with your favorite online email service
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.
Rambler-Weather
Take a look on the extension for understanding what is the weather like outside.