Rozšíření
Browse++ Sidebar
Utilities for even more powerful web browsing. Search all open tabs, retrieve previously closed tabs, and make notes.
InoReader Sidebar
Mobile version Inoreader.com on sidebar (not official)
Landmarks
Allows you to navigate a web page via WAI-ARIA landmarks, using the keyboard or a pop-up menu.
Simple Bookmark Sidebar
This extension shows your bookmarks in Opera's sidebar.
Workspace Tab Counter
A tab counter specifically for GX, which counts tabs per workspace too.
KJMZ DA BLAZE
Listen KJMZ DA BLAZE Radio with Opera Browser.
The Stories (sidebar edition)
Smart and beautiful tool for keeping links. Create a story for every ocasion!
Headings, Landmarks and Links
View the headings, landmarks and links from a web page in a side panel and export information to CSV formated file.
Blendup
A tool for web developers to preview blend modes on different page elements.