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SimpleExtManager
A simple menu to enable, disable and access options of extensions.
Browse++ Sidebar
Utilities for even more powerful web browsing. Search all open tabs, retrieve previously closed tabs, and make notes.
Luminous: JavaScript events blocker
An experimental extension to identify, analyze and block code execution and event collection through JavaScript in your browser.
GTasks Sidebar
Google Tasks on sidebar (not official)
ICQ for Sidebar
Run ICQ Web in Sidebar
GETTR Sidebar
Bring your news feed from the free speech social media platform gettr.com to the Opera sidebar for quick access.
Monthly Prayers Timetable
Islamic Monthly Prayers Timetable with HTML5 localStorage
Hackernews Sidebar
Loads up Dharmesh Patels's excellent Web App for Hackernews on the Sidebar
Simple Vertical Tabs
Simple Vertical Tabs
MightyV Sidebar
Follow your favorite TV show. For Opera 29+ only.
TaggingNotes
Adds notes managed by tagging without hierarchized tree to sidebar.
TollSjekk
TollSjekk
Simple Bookmark Sidebar
This extension shows your bookmarks in Opera's sidebar.
KJMZ DA BLAZE
Listen KJMZ DA BLAZE Radio with Opera Browser.
InoReader Sidebar
Mobile version Inoreader.com on sidebar (not official)
Site Settings Sidebar
Site specific settings on your sidebar.
Landmarks
Allows you to navigate a web page via WAI-ARIA landmarks, using the keyboard or a pop-up menu.
The Stories (sidebar edition)
Smart and beautiful tool for keeping links. Create a story for every ocasion!
Blendup
A tool for web developers to preview blend modes on different page elements.
Techmeme Sidebar
Browse technology news on Techmeme in the sidebar.
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