Brainly Blocker by nitro.
An extension that blocks some of brainly's ads and other stuff.
Twitter Video Downloader | Fast and Free
Download Twitter Videos - Save any Twitter video and gif with one simple click. free, fast & easy to use.
Annotating the Web
Add-on, by Mediamaster.eu, to easily add annotation functionality to any webpage
VectorDraw - Paint on Tab
Draw interactive objects (circle, rectangular, polygon) or use the brush tool to write on the current tab and capture the result
All google web apps with a single click
Viewer for online documents (e.g. PDF, MS Word)
Classic Tabs brings back some of the extra tab options from Opera 12.
Boomerang for Gmail™
Allows you to schedule messages to be sent or returned at a later date.
Close & Clean
Close all tabs and windows and clean up Opera in one single click
Youtube is No MORE
Remove everything from the homepage of youtube, so you dont get lost, and you can still check your notifications.
Refresh your browser tab automatically at the desired interval.
EverSync - Sync dials, backup dials
Synchronize your bookmarks, FVD Speed Dials. Secure online access. Backup, restore your bookmarks. Sync favorites between computers
Open in PDF Viewer
Easily open desired links in PDF viewer
A library-approved tool to unlock access to academic papers.
Category Tabs for Google Keep™
Better organise your Google Keep notes
QR Code Reader
a multiple QR- and bar-code scanner that supports scanning from webcam and local images
Easily clear browser's cache via toolbar popup.
Bookmarks by the Side
A simple bookmarks sidebar.
You can customize the theme and colors from YouTube yourself. You can do many more settings Youtube
Speed Test Most Accurate Online Broadband Internet Speed Test
TickTick for Opera Sidebar (Unofficial Extension)
TickTick for Opera Sidebar. Unofficial Extension
Shows a popup with an image preview when hovering over link.
Retruco Eliminate Anti AdBlock
Removes fixed message from Ad-Block blockers
Group Your Tabs
Group opened tabs in a pretty list
2FAS - Two factor authentication
2FAS extension is simple, private, and secured: one click, one tap, and your 2FA token is automatically entered!
Ad Blocker for Facebook™ App (Video & Images)
Blocks video and image ads from the facebook app news feed. And it actually works
Speeds up browsing over the time, by adding missing Cache-Control response headers.
Save and restore all tabs from toolbar popup!
Redirects URLs / modifies HTTP headers arbitrarily.
An extension that allows for Bionic Reading on any webpage!
Gmail™ Panel (and Notifier)
Easy access to Gmail via toolbar-popup UI, plus, get badge notifications.