拡張機能
Hola Free VPN Proxy Unblocker
Unblock websites blocked in your country, company or school with Hola. Hola is free and easy to use!
Tampermonkey
The world's most popular userscript manager
convert2mp3.net Online Video Converter
Adds an option to convert YouTube.com, Dailymotion.com, and Clipfish.de Videos online to MP3, MP4 and more formats
Enhancer for YouTube
YouTube™のユーザーエクスペリエンスを向上させる多数の機能。
Avast Online Security
Avast Browser Security and Web Reputation Plugin.
ibVPN - Best VPN & Proxy
Best VPN & Proxy for Unblocking Restricted Websites
Adblock Fast
The world’s fastest ad blocker! Same ad blocking, 8x accelerated page loading.
VirtualShield - Fast and reliable VPN
Browse the web safely and anonymously. Built for privacy protection, backed by our fast, reliable, and secure network.
Nimbus Screen Capture
ウェブページ全体やページの一部、またはブラウザウィンドウ全体をキャプチャ、スクリーンショットを編集し、ローカルファイルまたはGoogleドライブに画像を保存します。
Free Avira Phantom VPN - Unblock Websites
Climb over firewalls to access any site – securely and privately. Unlimited data & FREE.
DuckDuckGo for Opera
DuckDuckGo enhancements for Opera.
Evernote Web Clipper
Evernote の拡張機能を使用して、Web 上で見つけたページを Evernote アカウントに保存します。
Turn Off the Lights
画面全体が暗くなり映画館にいる気分。YouTube™ ほか動画サイトでもOK。
Pocket (formerly Read It Later)
Opera 向け Pocket 拡張機能 - 記事、ビデオなどを保存するベストな方法
Bookmarks Import & Export
Opera Bookmarks Import & Export
I don't care about cookies
Get rid of annoying cookie warnings from almost all 'infected' websites!
Capture Webpage Screenshot - FireShot
ウェブページ全体をスクリーンショット撮影。PDF/JPEG/GIF/PNGでキャプチャ、編集、保存やアップロード、印刷、そしてOneNote、クリップボード、メールに送信できます。
Gmail Notifier
Multiple label and account notifier for Google Mail (Gmail)
Set password for your browser ( Opera lock )
This extension will allow users to set password for the browser to avoid unauthorized access. Prompts for password on opera startup
Side Calculator
Calculator on the new sidebar of Opera.
YouTube™ Flash-HTML5
Play YouTube Videos in Flash or HTML5 Player
QR Codematic
QR Codematic allows you to easily generate QR codes.
MailTrack for Gmail
無料で使用回数無制限のEメールトラッキング。Gmail内で送信済みと既読をお知らせするダブルチェックマーク (✓✓) が表示されま
Pushbullet
Bringing together your devices, friends, and the things you care about.
Page Screenshot
Take a screenshot from the entire website with just one click.
Reddit Enhancement Suite
A suite of modules that enhance your Reddit browsing experience
Youtube to MP3 Converter
Convert Youtube to MP3, the most trusted YouTube to MP3 tool. It's fast, free, download instantly and no registration is required.
Gmail Notifier
Notifies you about unread e-mail in your Gmail account.
AdBlocker for YouTube™ Video
removes all sorts of advertisement and banners from YouTube
Google Keep Sidebar
Access to Google Keep website on the sidebar.
ColorPicker Eyedropper
A color-picker tool that allows you to select color values from webpages.
Disable HTML5 Autoplay
Disables autoplay of all HTML5 audio and video