Snaplark - Capture! Anything...
SLT Broadband Meter
This Add-on allows you to check Your Monthly SLT Usage
Url in title
Appends the domain name of each tab to its title.
Beautiful landscapes – instead of war!
HTML to Text
Extract Text from HTML code and make the content more readable than code
ColorHexa - Color Information and Conversion
Color tool converting and providing information about any color.
Opera 12-like tab switcher
This extension restores an Opera 12 functionality of switching tabs by RMB+mouse wheel shortcut
Trade even faster and easier. Get the Trading 212 browser extension. It provides quick access to the FOREX markets.
Wordgram - vocabulary manager
Greasemonkey-like mods, but quicker to tweak. Create and apply your own synced tweaks to web pages
Learn new words on the go as you surf and read through the web. Select the word and InstaWord gives you the meaning, synonyms and usage example.
CSS Shapes Editor
Interactive editor for CSS Shapes.
One click to share highlighting text, image or page by 80+ social services (space for 1.8 billion people)
This extension communicates between the Opera browser and the Windows bookmark manager Linkman.
Best of your Twitter now on every webpage you visit
Browse JSON like you do it in Finder.
XBMC Remote Control
XBMC Remote Control for Opera
Browser Extension from F1000
Bring your image to an ambient lighting effect with just one click on the button.
Upload to Imgur
Adds option to context menu to upload an image to Imgur.
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
Undo Closed Tab(s) or Create a Duplicate of Your Current Tab.
place a timer into a webpage which will bring the page back at the end of the timer
Time.is - exact time, any time zone
Online synchronized clock for Opera Speed Dial
Wachete - Monitor website content changes
Monitor website content changes
Redirects URLs / modifies HTTP headers arbitrarily.
Tetris is a tile-matching puzzle game.
Kissanime Fullscreen - Auto-Play Next Video
Automatically plays the next video in the list without leaving fullscreen!
Close to the Left
Close tabs to the left.
Fat Pipe Downloader for Mac
provides Opera with a "Download With Fat Pipe" option