Google chrome Extensions 
Chrome Web store 
Wordpress Plugins 
Mozilla Firefox Addons 
This extension is used by AirClass to enable screen sharing in Firefox browsers.
Computes the Net Present Value of the future cash flows based on given discounted rate and period
Send bookmarks to the Bookmark Trash in any of the following two ways:
1. Drag and drop the bookmark on to the Trash Icon.
2. Right click on bookmark and select the 'Trash it' menu button.
The tool-bar button sends the address of the current web page to http://geschenker.net for adding it as a reference link to a present suggestion.
Adds some features to Terraria's Community Forums that aren't already present.
Fangs renders a text version of a web page similar to how a screen reader would read it. The ambition is to help developers understand how an assistive device would present a website and thereby increase chances of finding accessibility issues early.
things are very simple in life,keep smiling always..
Group studying now a click away!
Share your screen during Verbling lessons
-As a teacher, show students learning materials and exercises.
-As a student, show teachers your work.
A bell that reminds us to breathe and be mindful of our body and mind.
This is a simple tool to help people learn the English irregular verbs.
Are you bored while loading a page? If so, this add-on may relieve boredom by showing wallpaper while loading. (In present version, this works only when you add a tab)
ACCESS is a tool can look up the details of Chinese character and analyze Chinese characters on webpage. If users or Chinese teachers want to learn Chinese characters in a scientific way, try this addon to figure out all the components of characters.
