DontBugMe allows you to easily use credentials from BugMeNot.com on any page.
A small extension to validate the markup of current tab
Improve your privacy and browse safer with seven tweaks.
Read ePubs in a reader view style window, convert into PDF or use text to speech
Web Archive Viewer
Easily view archived (cached) webpages via seven different engines.
Open spoilers automatically
Zend Debugger Toolbar
Provides integration with Zend debugging and profiling tools.
Automatically redirect every page to its archived version in Wayback Machine, except the sites in Excludes List
Kursy walut ekantor.pl
EN: Table of exchange rates of ekantor.pl PL: Tabela z kursami walut z ekantor.pl
Get easy access to e-resources provided by your Library directly from your browser.
Droit au déréférencement
Copyright Hub Extension
Enables you to connect to licensing information for pictures that you have found.
Extension for increasing security and privacy level of the user.
Fix dumb things about Twitter and TweetDeck on the web (e.g. hidden “replying to”, t.co links)
Edit with VIM text editor
Edit an HTML element and all its child nodes in VIM text editor with real-time updates
One-click access to free copies of research papers whenever you hit the paywall
Activates the previous tab when closing the currently active tab. This doesn't work out of the box in Opera/Chrome because of a bug. It has been reported long time ago but nothing has happened. This extension fixes the bug.
Sakura Internet Badge
Opera Extension for FOP2.
marcinpudlo - Twitch Live Alert
Rozszerzenie ktore pokazuje ci kiedy marcinpudlo jest online na twitchu
LastQuake - EMSC
Latest Significant Earthquakes
Quick History Redux
A Redux (bug fix) for gucio1007's "Quick History". It shows your browsing history in the browser sidebar.
Badge Checker for Gmail™
Shows badge notification for unread emails (supports multi-account)
WebRTC Screen Capturing Demo
This opera extension enables screen capturing.
Change Geolocation (location Guard)
Easily change your geographic location (Geolocation) to your desired one and protect your privacy.
Online Video Converter
Convert YouTube videos to MP3 with just a single click!.
Autofill Forms using keyboard shortcut or toolbar button.
Open links in incognito
Galaxy Tour Builder
The amazing Galaxy Tour Builder web extension.
Adds a button to the top-left of every page to return to the website from which that page was linked.