Text to Speech - speaks text on any website
Beeline Reader - helps with reading fluency (and therefore comprehension) by using subtle color transitions in Google Docs, dyslexie font available
Resoomer - summarizes main idea in texts (up to 20000 characters)
Snap & Read Universal - reads accessible and inaccessible text, simplifies vocabulary/adjusts reading level, helps with citations. *free 30-day trial
Crafty Level - will tell you the Flesch-Kincaid grade level of any web page