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This extension pops open a fully functional calculator when its icon is tapped. It has both a basic calculator and a scientific calculator as pictured above.
It doesn't do anything fancy like provide a paper strip of calculations, but it does the simple functions very well using an attractive display.
Those needing a simple text editor may find this extension to be useful. It presents a blank editor window completely devoid of distractions.
Write Space saves data locally and avoids cloud storage for those leery of the unknown. It auto-saves the work in progress with every key press so it will never lose any data no matter what happens. It remembers where you left off when you last exited the extension, and all work is done offline so no web connection is required to use Write Space.
It is designed for heavy writing and keeps track of the word count.
The user can set the background and font to make it look as desired.
Boomerang for Gmail
This extension attaches itself to Gmail to provide the ability to schedule when a particular email should be sent. An example of a scheduled email could be that you remember a friend's birthday in the future so you write an email and schedule it to send on the day of the event.
Boomerang adds a strip at the bottom of the Gmail compose window (pictured above) to provide options for scheduling the email. The regular options (without scheduling) are still there, so Boomerang is easy to use when desired but is out of the way when not needed.
Another good feature of Boomerang is the ability to have it move messages from your inbox into a label/folder automatically. You can then set a schedule for them, and they will reappear in the inbox at the top of the list at the specified time. No more forgetting to deal with those messages of less importance.