CopywritingTools & UtilitiesAfter the Deadline Grammar & Spell Checker as a Chrome extension. From the folks behind the Akisment anti-spam software. CopyScape Check for plagiarised content. Grammarly Grammar Checker. Also Pro version available as a subscription. Hemmingway Analyses content for readability. Also available to purchase as a download. PaperRater Online Proofreading Tool. Readability Test Tool Test the readabilty score of your page. Scrivener Authors Editor. Great for research notes and Ebook layout preparation.