Udvidelser
Føj ny funktionalitet til Opera
CryptoPro Extension for CAdES Browser Plug-in
Расширение позволяет использовать КриптоПро ЭЦП Browser plug-in в браузере. Для работы требует установленного ЭЦП Browser plug-in.
EditThisCookie
EditThisCookie is a cookie manager. You can add, delete, edit, search, protect and block cookies!
Super Auto Refresh
Auto-refresh (reload) pages, on a selected interval. NO ADs. SUPER EASY.
User-Agent Switcher
User-Agent Switcher is a quick and easy way to switch between user-agents.
Контур.Плагин
Web Developer
Adds a toolbar button with various web developer tools. The official port of the Web Developer extension for Firefox.
Web Mirrors
Stylus
Redesign the web with Stylus, a user styles manager. Stylus allows you to easily install themes and skins for many popular sites.
Save All Images
a customizable extension to save selected images from the current tab page
Podpis elektroniczny Szafir SDK
JavaScript Switcher
Quick way to enable/disable Javascript
JSON Lite
Fast JSON viewer - highlights, shows items count/size, handles large files
Open in Google Chrome
Open current page, link, or all tabs in the Chrome browser.
RestMan
RESTMan is a browser extension to work on http requests.
HTML5 Editor
HTML5 Editor with CSS, JS, HTML validator and beautify code
Помощник диагностики
SeoQuake extension
SEOquake is a free plugin that provides you with key SEO metrics, along with other useful tools such as SEO Audit and many others
PerfectPixel by WellDoneCode
This extension helps develop your websites with per pixel accuracy!
RDS bar
Quick SEO analysis of websites and pages, designed for webmasters and SEOs.
Firebug Lite for Opera 15+
Full Screen
Go full screen with one click on the button.
RESTED
A REST client for the rest of us
TV Emulator
The Vewd TV Simulator enables any developers to test and debug their HTML5 apps for the Vewd App Store.
Font Finder
An easy-to-use font inspector to get CSS styles of the selected element
CORS Toggle
Adds Access-Control-Allow-Origin, Access-Control-Allow-Methods and Access-Control-Allow-Headers headers for CORS.
Extension source viewer
View source code of extensions in the Chrome Web Store, Firefox or Opera addon gallery. Has button to install from Chrome Web Store.
Internet Speed Test
Test your internet connection speed (upload and download) from a toolbar panel
Cookie Editor
Edit cookies related to the current page and all its sub-frames right from a popup
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
Browserling - Cross-browser testing
Cross-browser test websites in the most popular browsers such as Internet Explorer, Edge, Chrome, Firefox, Safari and Opera. Try for free!
Disable Cookies
Disable cookies for current domain.
Octotree
Code tree for GitHub
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