Leudachain
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.
Classic Notes
Old-styled notes in your extensions sidebar. http://fidel.im/classic-notes?en
Side Calculator
Calculator on the new sidebar of Opera.
V7 Bookmarks
Bookmarks manager in your sidebar
Skype Sidebar
Access to Skype for Web on the sidebar.
Bitwarden - Free Password Manager
A secure and free password manager for all of your devices.
Twitter Lite Sidebar (Unofficial)
Access Twitter Lite through Opera Sidebar. This is an UNOFFICIAL extensions.
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.
V7 Sessions
Sidebar session manager
Bookmarks by the Side
A simple bookmarks sidebar.
Pocket Sidebar
Pocket for Opera sidebar extention.
V7 Notes
Old school opera notes
Text to Voice
Open sidebar selected text and click in context menu 'Selected text to Speech' to listen
Yandex.Translate Sidebar
This is an unoffical extensions. Yandex Translate for Opera Sidebar
Raindrop.io - Smart Bookmarks
"Save Button" for Web
Sidebar Sticky Note
Free HTML5 Sidebar Sticky Notes
V7 History
Access History from your Sidebar
Web Panel
Navigate to websites in the sidebar.
TweetTab
Access to Twitter mobile site. For Opera 29+ only.
V7 Extension Manager
simple extension manager for your side bar
Quick Notes
The extension allows you to quickly save text notes on the sidebar of your browser.
Sidebar for Google™ Search
Easy Access to Google search via Sidebar UI
V7 Stash
save pages for later reading
V7 Tabs
Sidebar windows and tabs
SimpleExtManager
A simple menu to enable, disable and access options of extensions.
Bookmarks Manager and Viewer
An elegant bookmark manager with fuzzy search and more
PageExpand
All Image Download. Image Zoom. Expand Thumbnail and Audio and Video. Expand the short URL. Override Referer. Extend BBS. etc...