Extensions
Bookmarks Manager and Viewer
An elegant bookmark manager with fuzzy search and more
Todoist sidebar(Unofficial)
Opens Todoist(https://todoist.com) in the sidebar. This is an unoffical extension.
Tab Sidebar
A sidebar extension for tab management.
Sidebar for Google™ Search
Easy Access to Google search via Sidebar UI
tabzen
Too many open tabs? Manage your tabs, regain your sanity and improve your browsing experience with tabzen
Luminous: JavaScript events blocker
An experimental extension to identify, analyze and block code execution and event collection through JavaScript in your browser.
Side Chat.
The best way to share things well surfing the web - Simplest possible way.
Free File Sender
Free file transfer
Simple Notes
Simple notes in a panel, with a context menu item to copy text to a note.
The History Panel
An extension that puts the browser history in the sidebar, sorted by date.
2048 Mini game
The game 2048
Simple Bookmark Sidebar
This extension shows your bookmarks in Opera's sidebar.
Bible-WebApp
This widget uses Logos Bible Software's Biblia.com Bible API service to get the Bible text
ICQ for Sidebar
Run ICQ Web in Sidebar
Browse++ Sidebar
Utilities for even more powerful web browsing. Search all open tabs, retrieve previously closed tabs, and make notes.
Goldfishka
Simple Vertical Tabs
Simple Vertical Tabs
Site Settings Sidebar
Site specific settings on your sidebar.
Radioigor side
The sidebar with all the Radioigor and Videoigor music channels.
Monthly Prayers Timetable
Islamic Monthly Prayers Timetable with HTML5 localStorage
GTasks Sidebar
Google Tasks on sidebar (not official)
Prayer times | مواقيت الصلاة.
معرفة مواقيت الصلاة
GIKRadio
The extension allows you to listen GIKRadio directly in the browser. Walk on the Internet and listen good music! Request Song from sidebar (press CTRL+SHIFT+S).
Hackernews Sidebar
Loads up Dharmesh Patels's excellent Web App for Hackernews on the Sidebar
Sidebar Todo
Minimalistic todo extension for your sidebar
TaggingNotes
Adds notes managed by tagging without hierarchized tree to sidebar.
TollSjekk
TollSjekk
InoReader Sidebar
Mobile version Inoreader.com on sidebar (not official)
MightyV Sidebar
Follow your favorite TV show. For Opera 29+ only.
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!
Help on Social (#gHelp) Sidebar
Access to Help on Social (#gHelp) on the sidebar.