Extensions
Sidebar for Youtube Music
Youtube Music sidebar extension
Sidenotes
Simple notes for your Opera sidebar
TickTick for Opera Sidebar (Unofficial Extension)
TickTick for Opera Sidebar. Unofficial Extension
Facebook Opera Sidebar
Access Facebook through Opera Sidebar.
KJMZ DA BLAZE
Listen KJMZ DA BLAZE Radio with Opera Browser.
Black Menu for Wikipedia
Easy access to the Wikipedia universe
Landmarks
Allows you to navigate a web page via WAI-ARIA landmarks, using the keyboard or a pop-up menu.
Twitter Lite Sidebar (Unofficial)
Access Twitter Lite through Opera Sidebar. This is an UNOFFICIAL extensions.
Tree Tabs
Manage your tabs in the sidebar!
ICQ for Sidebar
Run ICQ Web in Sidebar
Sidebar Sticky Note
Free HTML5 Sidebar Sticky Notes
Free File Sender
Free file transfer
Bitwarden Password Manager
At home, at work, or on the go, Bitwarden easily secures all your passwords, passkeys, and sensitive information
Bookmarks Manager and Viewer
An elegant bookmark manager with fuzzy search and more
Sidebar for Google™ Translate
Easy Access to Google Translate via Sidebar UI
Sidebar for YouTube™
Easy Access to YouTube via Sidebar UI
Bible-WebApp
This widget uses Logos Bible Software's Biblia.com Bible API service to get the Bible text
Monthly Prayers Timetable
Islamic Monthly Prayers Timetable with HTML5 localStorage
Shortcuts for Google™
Choose from 1000+ Google™ shortcuts to show up as buttons in a space-saving popup
Vertical Tabs
Manage your tabs in the sidebar!
Text to Voice
Open sidebar selected text and click in context menu 'Selected text to Speech' to listen
Blendup
A tool for web developers to preview blend modes on different page elements.
GTasks Sidebar
Google Tasks on sidebar (not official)
Web Panel
Navigate to websites in the sidebar.
The Stories (sidebar edition)
Smart and beautiful tool for keeping links. Create a story for every ocasion!
InoReader Sidebar
Mobile version Inoreader.com on sidebar (not official)
Simple Vertical Tabs
Simple Vertical Tabs
Bookmarks by the Side
A simple bookmarks sidebar.
Simple Bookmark Sidebar
This extension shows your bookmarks in Opera's sidebar.
Simple Notes
Simple notes in a panel, with a context menu item to copy text to a note.
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