Extensions
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.
2048 Sidebar
The famous 2048 game on the Opera Sidebar.
Twitter Lite Sidebar (Unofficial)
Access Twitter Lite through Opera Sidebar. This is an UNOFFICIAL extensions.
Sidebar for Google™ Translate
Easy Access to Google Translate via Sidebar UI
V7 Bookmarks
Bookmarks manager in your sidebar
Side Calculator
Calculator on the new sidebar of Opera.
Google Keep Sidebar
Access to Google Keep website on the sidebar.
Skype Sidebar
Access to Skype for Web on the sidebar.
uMatrix
Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.
V7 Sessions
Sidebar session manager
Google Translate Sidebar for Opera
Access Google Translator through Opera Sidebar. This extension is UNOFFICIAL, and has nothing to do with Google.
Text to Voice
Open sidebar selected text and click in context menu 'Selected text to Speech' to listen
Sidebar Sticky Note
Free HTML5 Sidebar Sticky Notes
Raindrop.io - Smart Bookmarks
"Save Button" for Web
V7 Notes
Old school opera notes
Bookmarks by the Side
A simple bookmarks sidebar.
TweetTab
Access to Twitter mobile site. For Opera 29+ only.
Yandex.Translate Sidebar
This is an unoffical extensions. Yandex Translate for Opera Sidebar
Quick Notes
The extension allows you to quickly save text notes on the sidebar of your browser.
Web Panel
Navigate to websites in the sidebar.
V7 History
Access History from your Sidebar
Vertical Tabs
Manage your tabs in the sidebar!
V7 Tabs
Sidebar windows and tabs
SimpleExtManager
A simple menu to enable, disable and access options of extensions.
Tree Tabs
Manage your tabs in the sidebar!
V7 Stash
Save pages for later reading
Sidebar for Google™ Search
Easy Access to Google search via Sidebar UI
Todoist sidebar(Unofficial)
Opens Todoist(https://todoist.com) in the sidebar. This is an unoffical extension.