Leudachain
uBlock Origin
Finally, an efficient blocker. Easy on CPU and memory.
Translator
Translate selected or entered text
Sidebar for YouTube™
Easy Access to YouTube via Sidebar UI
Instagram Sidebar
Access to Instagram.
Bitwarden - Free Password Manager
A secure and free password manager for all of your devices.
Google Translate Sidebar for Opera
Access Google Translator through Opera Sidebar. This extension is UNOFFICIAL, and has nothing to do with Google.
2048 Sidebar
The famous 2048 game on the Opera Sidebar.
Side Calculator
Calculator on the new sidebar of Opera.
V7 Bookmarks
Bookmarks manager in your sidebar
Sidebar for Google™ Translate
Easy Access to Google Translate via Sidebar UI
Google Keep Sidebar
Access to Google Keep website on the sidebar.
Skype Sidebar
Access to Skype for Web on the sidebar.
Twitter Lite Sidebar (Unofficial)
Access Twitter Lite through Opera Sidebar. This is an UNOFFICIAL extensions.
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.
V7 Sessions
Sidebar session manager
Sidebar Sticky Note
Free HTML5 Sidebar Sticky Notes
Text to Voice
Open sidebar selected text and click in context menu 'Selected text to Speech' to listen
V7 Notes
Old school opera notes
TweetTab
Access to Twitter mobile site. For Opera 29+ only.
Quick Notes
The extension allows you to quickly save text notes on the sidebar of your browser.
V7 History
Access History from your Sidebar
Web Panel
Navigate to websites in the sidebar.
SimpleExtManager
A simple menu to enable, disable and access options of extensions.
Raindrop.io - Smart Bookmarks
"Save Button" for Web
V7 Tabs
Sidebar windows and tabs
Vertical Tabs
Manage your tabs in the sidebar!
Yandex.Translate Sidebar
This is an unoffical extensions. Yandex Translate for Opera Sidebar
PageExpand
All Image Download. Image Zoom. Expand Thumbnail and Audio and Video. Expand the short URL. Override Referer. Extend BBS. etc...
V7 Stash
Save pages for later reading
V7 Extension Manager
simple extension manager for your side bar
Bookmarks Manager and Viewer
An elegant bookmark manager with fuzzy search and more