Leudachain
Cuir feartan ùra ri Opera
uBlock Origin
Finally, an efficient blocker. Easy on CPU and memory.
Sidebar for YouTube™
Easy Access to YouTube via Sidebar UI
Instagram Sidebar
Access to Instagram.
Google™ Translator Sidebar
Easy Access to Google Translate via Sidebar UI
2048 Sidebar
The famous 2048 game on the Opera Sidebar.
Skype Sidebar
Access to Skype for Web on the sidebar.
Classic Notes
Old-styled notes in your extensions sidebar. http://fidel.im/classic-notes?en
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.
uMatrix
Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.
Twitter Lite Sidebar (Unofficial)
Access Twitter Lite through Opera Sidebar. This is an UNOFFICIAL extensions.
Bitwarden - Free Password Manager
A secure and free password manager for all of your devices.
V7 Sessions
Sidebar session manager
Pocket Sidebar
Pocket for Opera sidebar extention.
Bookmarks by the Side
A simple bookmarks sidebar.
Web Panel
Navigate to websites in the sidebar.
Raindrop.io - Smart Bookmarks
"Save Button" for Web
Sidebar Sticky Note
Free HTML5 Sidebar Sticky Notes
V7 Notes
Old school opera notes
TweetTab
Access to Twitter mobile site. For Opera 29+ only.
Text to Voice
Open sidebar selected text and click in context menu 'Selected text to Speech' to listen
V7 History
Access History from your Sidebar
Yandex.Translate Sidebar
This is an unoffical extensions. Yandex Translate for Opera Sidebar
SimpleExtManager
A simple menu to enable, disable and access options of extensions.
V7 Tabs
Sidebar windows and tabs
Sidebar for Google™ Search
Easy Access to Google search via Sidebar UI
Quick Notes
The extension allows you to quickly save text notes on the sidebar of your browser.
V7 Extension Manager
simple extension manager for your side bar
V7 Stash
save pages for later reading
TweetDeck Sidebar
Access to TweetDeck. For Opera 29+ only.
Todoist sidebar(Unofficial)
Opens Todoist(https://todoist.com) in the sidebar. This is an unoffical extension.