Leudachain
calcatom
Smart Scientific Calculator & Live Currency Converter
Category Tabs for Google Keep™
Better organise your Google Keep notes
uMatrix
Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.
Tabsets.net
Use the tabsets.net browser extension to safely keep track all your tabs and links in the Side Panel, locally or in the cloud
Bookmarks Manager and Viewer
An elegant bookmark manager with fuzzy search and more
Tree Tabs
Manage your tabs in the sidebar!
Twitter Lite Sidebar (Unofficial)
Access Twitter Lite through Opera Sidebar. This is an UNOFFICIAL extensions.
ChessGrow
Give easy access to ChessGrow from sidebar.
PageExpand
All Image Download. Image Zoom. Expand Thumbnail and Audio and Video. Expand the short URL. Override Referer. Extend BBS. etc...
Bookmarks by the Side
A simple bookmarks sidebar.
Simple Vertical Tabs
Simple Vertical Tabs
Monthly Prayers Timetable
Islamic Monthly Prayers Timetable with HTML5 localStorage
Navvatart VerTabs
Modern vertical tab manager with multi-group support, drag and drop, and smooth animations. By Navvatart
Sidebar Covid Tracker
Simple Covid Tracker for Sidebar based of https://www.worldometers.info/coronavirus/
Shortcuts for Google™
Choose from 1000+ Google™ shortcuts to show up as buttons in a space-saving popup
GeoKW
Zaznacz lub wpisz numer KW, aby uzyskać informacje o działkach w tej księdze.
Hackernews Sidebar
Loads up Dharmesh Patels's excellent Web App for Hackernews on the Sidebar
TickTick for Opera Sidebar (Unofficial Extension)
TickTick for Opera Sidebar. Unofficial Extension
SimpleExtManager
A simple menu to enable, disable and access options of extensions.
TollSjekk
TollSjekk
Techmeme Sidebar
Browse technology news on Techmeme in the sidebar.
Minúta po minúte
Minúta po minúte Denníka N
Gus EDT Extension
Extension pour utiliser le Gus-Edt
Simple Bookmark Sidebar
This extension shows your bookmarks in Opera's sidebar.
Black Menu for Wikipedia
Easy access to the Wikipedia universe
SunBible
A beautiful way to read, study, and memorize the Bible
ICQ for Sidebar
Run ICQ Web in Sidebar
Fraction Generator
Generate Fractions for copy to clipboard
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)
CalLite CRM
CalLite CRM - Monitor Plugin
Workspace Tab Counter
A tab counter specifically for GX, which counts tabs per workspace too.