Leudachain
Edit with Paint.Net
Adds a context menu item to send image links directly to Paint.Net photo editor
DomainUserAgent
This extension changes the UserAgent sent by your browser on a per-domain base. You can set up a different UserAgent for a specific domain, but still use the default one otherwise.
TestCase Studio
TestCase Studio record the user actions performed on a web application in English Sentences. Best alternative for Selenium IDE
Nextsense PDF Signing Component
Signing PDF document.
md5 hash generator
MD5 hash generator (offline mode)
Stethoscope
Check the health of a github repo with one easy step.
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
Octobox
Integrate Octobox directly into your GitHub workflow
Block Yourself from Analytics
Block your Google Analytics™ activity for the websites you own, no more false stats.
Polypad (Open in App)
Polypad Open in App.
Design Mode
Edit any page's content by switching to design mode, where you can modify the content and drag images around like a Word Editor
HexDump - Hex Viewer
Display file contents in hexadecimal, and ascii
GitHub Extension
The GitHub Browser Extension allows GitHub users to quickly find and open all of their assigned issues and pull requests from a single location. It can be handy for developers and project managers to view their tasks.
Rainbow States
Color AWS Step Functions states
Service Worker Detector
This extension detects if a website registers a Service Worker.
Encode Decode HTML
Encode HTML to show it in the HTML pages a code instead of rendered HTML. Decode HTML to convert it back to HTML code
Sitemap Explorer: Check and View XML Sitemaps
This extension helps you find, inspect, export, and view XML Sitemap files for any site you navigate in a browser.
Selenium Page Object Generator
A nimble and flexible Selenium Page Object Model generator to improve agile testing process velocity.
.no { CSS }
Opera 12 reminiscent Shift-G CSS zapper (use Alt-G)
NPM Version Stats
Show npm package version usage statistics inline on the npmjs.com package page in the versions tab
Ninja Van Tracking
Track your Ninja Van Tracking Onilne
Web Widgetizer
Web Widgetizer is a extension offering a range of features to enhance browsing. It allows users to create separate Opera windows for specific websites, manage favorite links, customize window dimensions, toggle auto-start, and open links in popup tabs via button click or shortcut (Ctrl + Shift + A). This versatile tool optimizes browsing convenience and efficiency.
Dev extensions reload
Reload enabled development extensions
Sitecore Extensions
Small improvements which will make your work with Sitecore much easier.
CSS3 Button Maker
Is CSS button code generator free easy tool that allows you create beautiful and elegant CSS web buttons in few clicks
Favicon Stealer
Very simple thing for their job
Page Load Time
Displays page load time in the toolbar
InTab - Code CSS 2X Faster
Visually Style Any Website In Any Browser
Hex Calculator
Perform quick and accurate hexadecimal calculations — addition, subtraction, multiplication, and division with remainder — directly in your Opera browser.
Bug Magnet
Bug Magnet
Webmaster menu
Adds new items to browser context menu that open various analyzes of browsed web pages and sites.
Extension Auditor
Browser Extension Security & Privacy Analyzer