ReadMo - Reading mode with an audio player 📖🎧
Wordpress Read Time - Shows you the reading time of your blog post as you write
Spritz Bookmarklet - Speed-read on any website
Read Time - Webpage read time estimator chrome extension
Periodical - This application calculates the fertile days according to Knaus-Ogino.
How Long to Read - Find out how long will it take you to read that book