Easy Access to YouTube via Sidebar UI
Magic Actions for YouTube™
Enhance your YouTube watching experience! Auto HD, Ad Block, Cinema Mode, Mouse Wheel Volume Control, Screenshot...
Youtube - Most Popular
The most popular videos currently trending on Youtube right now. Live on your Speed Dial.
The famous 2048 game on the Opera Sidebar.
TED: Ideas worth spreading
Stay up-to-date with latest TED talks.
The StumbleUpon Extension for Opera is the easiest way to discover new and interesting photos, videos, web pages and more from across the Web.
Explore games & track your favorite streams on Twitch
Free Flash, Unity3D and html5 games
Best Unity3D, Flash and html5 games. This extension opens game panel with a single click. New games every day! Very easy to use!
Dark Theme for YouTube™
YouTube theme : Specially for night or prevent the flash effect over-night.
YouTube Center contains all kind of different useful functions which makes your visit on YouTube much more entertaining.
Scroll smoothly on all websites with your mouse and keyboard.
Open in VLC™ (VideoLAN)
Easily open desired links in VLC media player
Watch YouTube in the full-HD quality or the highest available one
Super Mario Crossover
The legendary arcade game that has survived the ages and can still be found today in modern arcades. You may have played this game when you were a kid and want to have a bit of fun remembering what it was like.
SmartVideo For YouTube
Better YouTube experience. Provides 'Smart Buffer' for slow connections; auto loop; buffer preferences; quality selection; and more.
Huge collection of Live Internet TV channels from all over the world. Online TV / Television
World's most useless extension
The most useless extension in the world.
Speed Dial for YouTube
Enjoy the latest popular YouTube videos straight from your Opera Speed Dial.
Live TV Speed Dial
A Speed Dial that shows you what is currently on Filmon TV.
Once again the Bad Piggies want the birds eggs!
Real gameplay video on Steam!
CatBlock is like an ad blocker, but instead of blocking ads it shows you pictures of cats (configurable)
Web Extension making 'The Settlers Online' collectibles easy to find!
YouTube™ Auto HD-LQ
Play YouTube Videos in the Highest or Lowest Available Quality
Adds a button to YouTube videos to toggle auto-repeat.
Play your favorite games. Available 1000+ games!
Global Twitch Emotes
Twitch culture wherever you go! This extension replaces all Twitch.tv emote phrases with their actual emoticons.
ImprovedTube - YouTube Extension
Improves YouTube's functions and site with Limited Permissions. Auto HD, Resize, Annotations, Playback Speed and more.
Beta version - Mark already seen Videos on YouTube
YouTube™ Media Player
Simple, yet elegant player for YouTube