CryptoPro Extension for CAdES Browser Plug-in
EditThisCookie is a cookie manager. You can add, delete, edit, search, protect and block cookies!
User-Agent Switcher is a quick and easy way to switch between user-agents.
Super Auto Refresh
Auto-refresh (reload) pages, on a selected interval. NO ADs. SUPER EASY.
Adds a toolbar button with various web developer tools. The official port of the Web Developer extension for Firefox.
Open in Google Chrome
Open current page, link, or all tabs in the Chrome browser.
Formats and highlights JSON data loaded from file or server.
RESTMan is a browser extension to work on http requests.
Save All Images
a customizable extension to save the images from the current tab page
HTML5 Editor with CSS, JS, HTML validator and beautify code
Quick SEO analysis of websites and pages, designed for webmasters and SEOs.
SEOquake is a free plugin that provides you with key SEO metrics, along with other useful tools such as SEO Audit and many others
Opera TV Emulator
The Opera TV Emulator enables any developers to test and debug their HTML5 apps for the Opera TV platform.
A REST client for the rest of us
PerfectPixel by WellDoneCode
This extension helps develop your websites with per pixel accuracy!
Get all CSS styles of selected text
Redesign the web with Stylus, a user styles manager. Stylus allows you to easily install themes and skins for many popular sites.
Responsive Web Design Tester
Responsive Web Design Tester is a quick and easy way to test your responsive website.
Disable cookies for current domain.
Go full screen with one click on the button.
PDF API HTML5
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.
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
Custom Style Script
Click on any element to get the font info in a page popup
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
Code tree for GitHub
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.