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CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
NoFollow
Outlines nofollow links, detects nofollow and noindex meta tags on webpages. Features website filtering and custom CSS outline styles
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.
Extensions for Mermaid
A browser extension for Chrome, Opera & Firefox that adds Mermaid language support to GitHub. A fork from the not updated GitHub + Mermaid extension.
OctoLinker
OctoLinker – Links together, what belongs together.
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.
Modify Header Value
Add, modify or remove a header for any request on desired domains.
sha1 hash generator
SHA1 hash generator (offline mode)
Website Links Checker
This tool helps you check all links from a page you are currently viewing.
Octobox
Integrate Octobox directly into your GitHub workflow
NsLookup - Find DNS Records
A simple and powerful tool for querying DNS records
ChroPath for Opera
AutonomIQ offers a developers platform ChroPath to generate and validate unique selectors like relative xpath with iframe support
Strike Out Nofollow Links
Just strikes out nofollow links via CSS3 selectors.
Hitsteps Visitor Manager
Get your website analytics insight and get notified about updates and live support requests in your dashboard
Open in Vivaldi
Open current page, link, or all tabs in the Vivaldi browser.
Nextsense XML Signing Component
Signing XML document.
Sitecore Extensions
Small improvements which will make your work with Sitecore much easier.
Involta Short links
Short link service
retire.js
Scanning website for vulnerable js libraries
HypeStat Analyzer
Check any website's traffic
Webmaster menu
Adds new items to browser context menu that open various analyzes of browsed web pages and sites.
Blendup
A tool for web developers to preview blend modes on different page elements.
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.
md5 hash generator
MD5 hash generator (offline mode)
Tabby Extension
Easily add BookMarks to Tabby from your preferred browser!
JavaScript QR Code
Make QR Codes in JavaScript
TwicPics Companion
Using TwicPics has never been so easy!
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.
.no { CSS }
Opera 12 reminiscent Shift-G CSS zapper (use Alt-G)
Get Thumbnails or Image to video YouTube
Make thumbnail previews or images from YouTube videos
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.
CSS3 Button Maker
Is CSS button code generator free easy tool that allows you create beautiful and elegant CSS web buttons in few clicks