Hola Better Internet
Access websites blocked in your country, company or school with Hola! Hola is free and easy to use!
Same ad blocking, 8x more accelerated webpage loading.
The most popular userscript manager for Blink-based browsers
Ant.com Antmarks Extension
Manage your favorite web pages
Bookmarks Import & Export
Opera Bookmarks Import & Export
Turn Off the Lights
The entire page will be fading to dark, so you can watch the videos as if you were in the cinema.
avast! Online Security
Avast Browser Security and Web Reputation Plugin.
Evernote Web Clipper
Use the Evernote extension to save things you see on the web into your Evernote account.
Userscript support for Opera.
Pocket (formerly Read It Later)
Pocket Extension for Opera - The best way to save articles, videos and more
Old-styled notes in your extensions sidebar. http://fidel.im/classic-notes?en
Get new message notifications and quick access to Yandex.Mail.
A realtime animated slideshow of photos from Instagram.
Multiple label and account notifier for Google Mail (Gmail)
Play YouTube™ Videos in Flash or HTML5 Player
DuckDuckGo for Opera
DuckDuckGo enhancements for Opera.
Youtube on speeddial
Shows videos from Youtube subscriptions on speeddial
YouTube™ All Flash® Player
Switch All YouTube™ Videos to Flash® Player
YouTube™ AdBlock removes all sorts of advertisements from YouTube.
Bookmarks by the Side
A simple bookmarks sidebar.
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.
Bringing together your devices, friends, and the things you care about.
Speed Dial for Gmail
A minimal SpeedDial extension to show the unread email count and title.
I don't care about cookies
Remove cookie warnings from tens of thousands of 'infected' websites.
Steam Trader Helper
This extension will help you to get the items at a good price and facilitate the work on the Steam Community Market.
uTorrent easy client
Extension add uTorrent web GUI in your web browser
Visual bookmarks, bookmarks sync across various browsers and absolute safety for your bookmarks
Block ads seamlessly on popular websites
Check road conditions in a glance.
Calculator on the new sidebar of Opera