How Long to Read - Find out how long will it take you to read that book
Google Doc Publisher - Make Google Docs good-looking in two clicks
Weglot - Translate your website instantly, no code required
Content Editor 2.0 by Surfer - Content Editor is the most advanced content optimization tool that allows you to write and grade your work.
Wordcounter for Google Docs - A real-time word count and milestone markers in Google Docs.
SEO Minion - Chrome extension & Firefox add-on to help you with SEO