The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...
AutoPager automatically loads next pages when you reach the end of a page. It works on a ton of sites,Google,Yahoo..
It works well with most other add-ons adblock plus, WOT and most of the greasemonkey scripts.
You can also try AutoPagerLite.
TinEye is a reverse image search engine. The plugin adds a context menu item that allows you to search for an image to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions.
Save Images saves the images from the current tab page, from the cache, to a specified location, with either the images original file name or a file name that you specify. The size and types of images saved may be chosen, with options if...
Customize application menus:
Rearrange or remove menuitems from the main context menu (right-click menu) and main menubar (File Edit View etc.)
Expands the context menu's 'Search for' item into a list of installed search engines, allowing you to choose the engine you want to use for each search.
Text2Link is a simple and easy-to-use way to copy the text of a link, or to open URLs and send emails to addresses not marked-up as HTML links.
Allows you to highlight text on a webpage by selecting it and clicking 'Highlight' on the popup menu. If you hold down the Shift key while opening the popup menu, a sub-menu appears with more advanced options...