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