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