Extensions
Bookmarks Manager and Viewer
An elegant bookmark manager with fuzzy search and more
V7 Tabs
Sidebar windows and tabs
PageExpand
All Image Download. Image Zoom. Expand Thumbnail and Audio and Video. Expand the short URL. Override Referer. Extend BBS. etc...
ICQ for Sidebar
Run ICQ Web in Sidebar
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
Tab Sidebar
A sidebar extension for tab management.
Bible-WebApp
This widget uses Logos Bible Software's Biblia.com Bible API service to get the Bible text
Site Settings Sidebar
Site specific settings on your sidebar.
Browse++ Sidebar
Utilities for even more powerful web browsing. Search all open tabs, retrieve previously closed tabs, and make notes.
MightyV Sidebar
Follow your favorite TV show. For Opera 29+ only.
GTasks Sidebar
Google Tasks on sidebar (not official)
Simple Bookmark Sidebar
This extension shows your bookmarks in Opera's sidebar.
Hackernews Sidebar
Loads up Dharmesh Patels's excellent Web App for Hackernews on the Sidebar
TollSjekk
TollSjekk
KJMZ DA BLAZE
Listen KJMZ DA BLAZE Radio with Opera Browser.
InoReader Sidebar
Mobile version Inoreader.com on sidebar (not official)
Quick History Redux
A Redux (bug fix) for gucio1007's "Quick History". It shows your browsing history in the browser sidebar.
TaggingNotes
Adds notes managed by tagging without hierarchized tree to sidebar.
Simple Vertical Tabs
Simple Vertical Tabs
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.
Freelyshout Lite On Sidebar
This is an unoffical extensions. Freelyshout for Opera Sidebar. Freelyshout is social media platform.
Blendup
A tool for web developers to preview blend modes on different page elements.