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Translator
Translate selected or entered text
uBlock Origin
一款高效的网络请求过滤工具，占用极低的内存和 CPU。
Video Downloader VeeVee
Video Downloader VeeVee – 从 Internet 下载视频。
Bitwarden - Free Password Manager
安全且免费的跨平台密码管理器。
Sidebar for YouTube™
Easy Access to YouTube via Sidebar UI
Pacman
A Pacman game on a popup, now version 1.2!
GX Calculator
Simple GX-style calculator adapts to the current colors and also reacts to keystrokes.
Facebook Opera Sidebar
Access Facebook through Opera Sidebar.
Sidebar Sticky Note
Free HTML5 Sidebar Sticky Notes
Sidebar for YouTube™
Simple access to YouTube using the sidebar UI
Sidebar for Google™ Translate
Easy Access to Google Translate via Sidebar UI
Sidebar for Youtube Music
Youtube Music sidebar extension
Note Sidebar
Simple note sidebar which can be used to write a note, record thoughts, to-do list, meeting notes, etc.
Sidebar Sketch
Sketch anytime on your sidebar, even offline.
QR Code Generator
Generate any QR code anytime, even offline
Sidenotes
Simple notes for your Opera sidebar
Text to Voice
Open sidebar selected text and click in context menu 'Selected text to Speech' to listen
Sudoku Sidebar
Play Sudoku on Sidebar anytime in your browser! even offline!
Emoji Minesweeper
Play Minesweeper as Emojis!
Vertical Tabs
Manage your tabs in the sidebar!
Quick Notes
The extension allows you to quickly save text notes on the sidebar of your browser.
Bing Translate
Easily access Bing Translate from Opera's sidebar
Raindrop.io - Smart Bookmarks
多功能的书签管理工具
Twitter Lite Sidebar (Unofficial)
Access Twitter Lite through Opera Sidebar. This is an UNOFFICIAL extensions.
Sudoku v2
Play Sudoku from sidebar anytime even offline
Tree Tabs
Manage your tabs in the sidebar!
Web Panel
Navigate to websites in the sidebar.
Simple Notes
Simple notes in a panel, with a context menu item to copy text to a note.
uMatrix
通過點選開關達到控制瀏覽器中的各種網頁請求。藉此阻擋網頁指令、嵌套頁面、媒體廣告、社交網站追踪等行爲。
Google Messages for Opera Sidebar
This Add-On allows you to send text messages from your Opera Browser, to anyone you want.
Google Messages Sidebar
Access to Google Messages website on the sidebar.
Bookmarks Manager and Viewer
An elegant bookmark manager with fuzzy search and more