Extensions
Boomerang for Gmail™
Allows you to schedule messages to be sent or returned at a later date.
JSON Beautifier
Display JSON objects by transforming them into Syntax editable highlighted HTML
Color Picker
Search for the perfect color via an stylish color picker in a popup.
Mobile View Switcher
Switch to mobile view with one click via toolbar button.
Disable Autoplay for YouTube™
Disable YouTube HTML5 player from auto-playing.
Smart RSS
RSS Reader for Opera 15+!
Bookmarks by the Side
A simple bookmarks sidebar.
IP Domain Flag
Shows country flag and other IP / domain information in the location bar.
YouTube™ All HTML5 Player
Switch All YouTube™ Videos to HTML5 Player
Cache Cleaner
Easily clear browser's cache via toolbar popup.
Bookmarks
Bookmark Manager and more ....
ImagePreviewer
Shows a popup with an image preview when hovering over link.
Tree Tabs
Manage your tabs in the sidebar!
DeepL for Browser
Translate highlighted text
Web Boost - Wait Less, Browse Faster!
Make your web pages load faster! Boost browser speed!
YouTube High Definition
A Powerful tool that will let you play all YouTube videos in High Definition automatically.
TickTick for Opera Sidebar (Unofficial Extension)
TickTick for Opera Sidebar. Unofficial Extension
Print
Print the current page you see.
Droplr - Screenshot, Annotate, & Screencast
Screen capture FULL webpage or any part of it. Take screenshots, annotations, screen recordings with audio narration.
AutoFill Forms
One click form filler that supports multiple profiles
Page Reloader
This extension will add a context menu item “Reload every” for page
Open in Chrome™
Open links in Google Chrome
Nimbus Note
Nimbus Notes - The easiest way to taking notes and clip text/pictures from Web pages in Opera browser.
Notifier for Outlook™
The easiest way to check and open your Outlook inbox while you browse internet.
Category Tabs for Google Keep™
Better organise your Google Keep notes
Google™ Calendar
Track life's important events all in one place supporting badge notification
V7 Stash
Save pages for later reading
Todoist for Opera
Organize work and life with Todoist for Opera
SimpleExtManager
A simple menu to enable, disable and access options of extensions.
The Printliminator
A simple tool to make websites print better.
Shortcuts for Google™
Choose from 800+ Google™ shortcuts to show up as buttons in a space-saving popup
Mute Tab
Easily mute all tabs with just one click!