Zerabase checks documents for common english prose and grammar issues.

  • Consistent sentence spacing
  • Catching annotations left in the text
  • Avoiding archaic forms
  • Avoiding a common cliché
  • Consistent spelling
  • Using the right form for the time of day
  • Not being hyperbolic
  • Capitalizing only what ought to be capitalized
  • and many more...

It's free and available from the G Suite Marketplace (formally Google Apps)

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Zerabase screenshot