Get the old AOL ‘You’ve Got Mail’ audio notification when you receive a new message in your Gmail or Google Apps inbox.
Browsers
Here are two extensions that will enable you to identify Gmail attachment file type without opening the mail in Google Chrome and Mozilla Firefox.
Add keyboard shortcut functionality to Chrome and Firefox to reorder tabs by moving to left, right, start or end position.
Quickly disable Cascading Style Sheets for a certain website using a bookmarklet or the browser’s native feature.
Set a particular User-Agent for a particular web site in Google Chrome and Mozilla Firefox to avoid the hassle of manual switching user agent every time you visit the site.
Set any custom image as favicon to a JavaScript bookmarklet in Mozilla Firefox with Bookmark Favicon Changer add-on. It’s a free extension, and works will all flavours of Firefox.
Markdown Here is an extension that lets you write email in Markdown and render it before sending with syntax highlighting. It’s available for Google Chrome, Mozilla Firefox, and Thunderbird.
Here’s a simple solution to remove mistakenly typed URLs or any unwanted website address from Google Chrome’s Omnibox suggestion.
Two new exiting tools have just landed in Firefox 15: Responsive Mode and Layout View. These new tools will help web developers test their responsive websites in different screen sizes right within the browser.
Facebook Fast Delete Messages extension simplifies Facebook message deletion task to a simple one-click process. It also lets you bulk delete all messages.