Mga extension
Google Messages for Opera Sidebar
This Add-On allows you to send text messages from your Opera Browser, to anyone you want.
Tree Tabs
Manage your tabs in the sidebar!
PageExpand
All Image Download. Image Zoom. Expand Thumbnail and Audio and Video. Expand the short URL. Override Referer. Extend BBS. etc...
uMatrix
Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.
Bookmarks by the Side
A simple bookmarks sidebar.
Free File Sender
Free file transfer
ChessGrow
Give easy access to ChessGrow from sidebar.
SimpleExtManager
A simple menu to enable, disable and access options of extensions.
Monthly Prayers Timetable
Islamic Monthly Prayers Timetable with HTML5 localStorage
TickTick for Opera Sidebar (Unofficial Extension)
TickTick for Opera Sidebar. Unofficial Extension
Simple Vertical Tabs
Simple Vertical Tabs
Sidebar Covid Tracker
Simple Covid Tracker for Sidebar based of https://www.worldometers.info/coronavirus/
Browse++ Sidebar
Utilities for even more powerful web browsing. Search all open tabs, retrieve previously closed tabs, and make notes.
GTasks Sidebar
Google Tasks on sidebar (not official)
Hackernews Sidebar
Loads up Dharmesh Patels's excellent Web App for Hackernews on the Sidebar
Workspace Tab Counter
A tab counter specifically for GX, which counts tabs per workspace too.
TollSjekk
TollSjekk
Site Settings Sidebar
Site specific settings on your sidebar.
ICQ for Sidebar
Run ICQ Web in Sidebar
Simple Bookmark Sidebar
This extension shows your bookmarks in Opera's sidebar.
Quick History Redux
A Redux (bug fix) for gucio1007's "Quick History". It shows your browsing history in the browser sidebar.
Gus EDT Extension
Extension pour utiliser le Gus-Edt
Landmarks
Allows you to navigate a web page via WAI-ARIA landmarks, using the keyboard or a pop-up menu.
InoReader Sidebar
Mobile version Inoreader.com on sidebar (not official)
Fraction Generator
Generate Fractions for copy to clipboard
SunBible
A beautiful way to read, study, and memorize the Bible
KJMZ DA BLAZE
Listen KJMZ DA BLAZE Radio with Opera Browser.
CalLite CRM
CalLite CRM - Monitor Plugin
Minúta po minúte
Minúta po minúte Denníka N
Techmeme Sidebar
Browse technology news on Techmeme in the sidebar.
Blendup
A tool for web developers to preview blend modes on different page elements.
The Stories (sidebar edition)
Smart and beautiful tool for keeping links. Create a story for every ocasion!