Essential Rated 5 out of 5 stars

I've used Hyperwords for the better part of a year, and the instant access to extended information is second nature to me now.

This is not a shady company. A long list of internet/computing superstars are part of the Hyperwords project:

http://www.hyperwords.net/about_us_people.html

This review is for a previous version of the add-on (3.5.1).