Extensions
Ant.com Antmarks Extension
Manage your favorite web pages
YouWatch
Beta version - Mark already seen Videos on YouTube
Nimbus Note
Nimbus Notes - The easiest way to taking notes and clip text/pictures from Web pages in Opera browser.
AlienTube
Reddit Comments for YouTube
TweetDeck Enhancer
TweetDeck Enhancer adds a beautiful new TweetDeck interface, designed for Material Design, and adds other usability features.
Scripter
Includes user's JavaScript with JQuery support on pages
I don't care about cookies
Remove cookie warnings from tens of thousands of 'infected' websites.
WebM Inline Player
Automatically replaces links to WebM files with embedded videos
SimpleExtManager
A simple menu to enable, disable and access options of extensions.
Yandex.Translate
Quickly translate words and phrases without a dictionary.
Start a videochat on Talky.io
Start a videochat on Talky.io by &yet.
Facebook™ Seen Blocker
Facebook™ Seen Blocker allows you to read your Facebook messages without notifying the sender.
No more duplicated tabs!
It will remove all duplicated tabs from your tabs bar. Less useless tabs give you better performance and easier overview of the tab bar.
Github HTML Preview
Adds a shortcut for HTML preview on Github.
pyGet P2P file sharing
pyGet lets you share files with remote computers and smart-phones without the need of any plugins.
Markdown Here
Écrivez votre courriel avec Markdown, puis rendez-le attrayant.
AdBlock
La plus populaire des extensions Chrome, avec plus de 40 millions d'utilisateurs ! Bloque la publicité sur le web.
Tampermonkey Beta
The most popular userscript manager for Blink-based browsers
Distill Web Monitor
Monitor webpages and RSS feeds and receive notifications.
Opera Internal Pages
Shows a dropdown menu with all Opera internal pages (e.g., opera:about, opera:plugins...).
Gmail on speed dial
Shows a preview of your unread mails on GMail
RightTasks for Gmail™
Adds your Google Tasks to a right sidebar in Gmail, like in Calendar.
Mailto:
Open mailto: links with your favorite online email service
CSS Shapes Editor
Interactive editor for CSS Shapes.
Simple To-Do List
Simple and minimalistic extension for task management.
Close Duplicate Tab
Close tabs which are duplicated. Only tabs with exact URL matches are closed. Currently restricted to tabs in the same window
SimpleTabOrder
A simple way to control the tab order of the browser.
Add to Things
Adds any page to Things task manager
Google™ Translator
Google™ Translator is a handy multi-language translator built on top of Google Translate.
Violent monkey
Userscript support for Opera.