Bookmarks Manager and Viewer
An elegant bookmark manager with fuzzy search and more
Opens Todoist(https://todoist.com) in the sidebar. This is an unoffical extension.
A sidebar extension for tab management.
Sidebar for Google™ Search
Easy Access to Google search via Sidebar UI
Too many open tabs? Manage your tabs, regain your sanity and improve your browsing experience with tabzen
Free File Sender
Free file transfer
The best way to share things well surfing the web - Simplest possible way.
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.
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.
Utilities for even more powerful web browsing. Search all open tabs, retrieve previously closed tabs, and make notes.
ICQ for Sidebar
Run ICQ Web in Sidebar
Simple Vertical Tabs
Simple Vertical Tabs
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).
The sidebar with all the Radioigor and Videoigor music channels.
Google Tasks on sidebar (not official)
Prayer times | مواقيت الصلاة.
معرفة مواقيت الصلاة
Loads up Dharmesh Patels's excellent Web App for Hackernews on the Sidebar
Mobile version Inoreader.com on sidebar (not official)
Minimalistic todo extension for your sidebar
Monthly Prayers Timetable
Islamic Monthly Prayers Timetable with HTML5 localStorage
Adds notes managed by tagging without hierarchized tree to sidebar.
Browse technology news on Techmeme in the sidebar.
Follow your favorite TV show. For Opera 29+ only.
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.