Ekstenzije
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.
Simple Notes
Simple notes in a panel, with a context menu item to copy text to a note.
Simple Bookmark Sidebar
This extension shows your bookmarks in Opera's sidebar.
2048 Mini game
The game 2048
Bible-WebApp
This widget uses Logos Bible Software's Biblia.com Bible API service to get the Bible text
Free File Sender
Free file transfer
Side Chat.
The best way to share things well surfing the web - Simplest possible way.
Site Settings Sidebar
Site specific settings on your sidebar.
Simple Vertical Tabs
Simple Vertical Tabs
ICQ for Sidebar
Run ICQ Web in Sidebar
The History Panel
An extension that puts the browser history in the sidebar, sorted by date.
Browse++ Sidebar
Utilities for even more powerful web browsing. Search all open tabs, retrieve previously closed tabs, and make notes.
Goldfishka
Prayer times | مواقيت الصلاة.
معرفة مواقيت الصلاة
Hackernews Sidebar
Loads up Dharmesh Patels's excellent Web App for Hackernews on the Sidebar
GTasks Sidebar
Google Tasks on sidebar (not official)
Sidebar Todo
Minimalistic todo extension for your sidebar
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).
Radioigor side
The sidebar with all the Radioigor and Videoigor music channels.
TollSjekk
TollSjekk
Monthly Prayers Timetable
Islamic Monthly Prayers Timetable with HTML5 localStorage
TaggingNotes
Adds notes managed by tagging without hierarchized tree to sidebar.
InoReader Sidebar
Mobile version Inoreader.com on sidebar (not official)
Techmeme Sidebar
Browse technology news on Techmeme in the sidebar.
Help on Social (#gHelp) Sidebar
Access to Help on Social (#gHelp) on the sidebar.
MightyV Sidebar
Follow your favorite TV show. For Opera 29+ only.
Blendup
A tool for web developers to preview blend modes on different page elements.