Short and Sweet.js is an accessible character counter for input elements. Tested on modern browsers with VoiceOver (Safari 11) & NVDA (Firefox 60).
Wordcounter for Google Docs
A real-time word count and milestone markers in Google Docs.
Wordcounter shows a real-time word count as you type in any Google Docs document. You can toggle it off and on by clicking on the icon in the top right corner of your browser.
It also adds milestone markers every 500 words. Motivating!