Grammarly is an American multinational technology company that develops the eponymous software, an English language digital writing tool using artificial intelligence and natural language processing.[5] Through machine learning and deep learning algorithms,[6] Grammarly’s product offers grammar checking, spell checking, and plagiarism detection services[7][8][9] along with suggestions about writing clarity, concision, vocabulary, delivery style, and tone.[10][11]

Grammarly logo.svg
Original author(s)Alex Shevchenko, Max Lytvyn, and Dmytro Lider[1][2]
Developer(s)Grammarly, Inc.
Initial release1 July 2009; 11 years ago (2009-07-01)[3]
Operating systemWindows, macOS, Linux, Android, iOS
TypeOnline text editor, browser extension, and mobile app with grammar checker, spell checker, and plagiarism detection
Alexa rankPositive decrease 176 (April 2020)[4]

The software was first released in July 2009 in Kyiv, Ukraine. Grammarly is headquartered in San Francisco, and has offices in Kyiv, New York City, and Vancouver.[12][13]

Description and license typesEdit

Grammarly automatically detects potential grammar, spelling, punctuation, word choice, tone and style mistakes in writing, following standard linguistic prescription. Algorithms flag potential issues in the text and suggest context-specific corrections for grammar, spelling, wordiness, style, punctuation, and plagiarism, although some are only for premium users. It is available as a web or desktop editor, as a browser extension for Chrome, Safari, Firefox, and Edge, and as an app for both iOS and Android.[14] Premium service is available for a monthly or annual payment.[15] The company also offers an enterprise tool called Grammarly Business.[16]


Grammarly was developed in 2009 by Ukrainians Alex Shevchenko, Max Lytvyn, and Dmytro Lider.[1][2] The backend grammar engine was written in Common Lisp.[17] The app is owned by Grammarly, Inc., of San Francisco, California.[18]

In May 2017, the company raised $110 million in its first round of funding.[19] In October 2019, the company raised $90 million in a second round, at a valuation of more than $1 billion.[20] It also became the first Ukrainian unicorn.[21]

In October 2018, Grammarly announced support for Google Docs.[22]

In 2018, a security bug was discovered in the desktop web browser extension version of Grammarly that allowed all websites access to everything the user had ever typed into the Grammarly Editor. This bug affected Google Chrome and Firefox and was rapidly fixed. Grammarly said it has no evidence that the security vulnerability was used to access any customers’ account data.[23]

See alsoEdit


  1. ^ a b Krasnikov, Denys (6 July 2018). "Grammarly opens new Kyiv office as demand rises for help with English". Kyiv Post. Businessgroup LLC. Retrieved 6 September 2019.
  2. ^ a b Wiggers, Kyle (12 September 2018). "Grammarly brings its AI-powered proofreading tools to Google Docs". VentureBeat. Retrieved 6 September 2019.
  3. ^ " WHOIS, DNS, & Domain Info – DomainTools". WHOIS. Retrieved 2016-08-27.
  4. ^ " Site Info". Alexa Internet. Retrieved 6 September 2019.
  5. ^ Baca, Marie (2019-08-26). "People do grammar bad. Google's AI is hear too help". Washington Post. Retrieved 2019-09-06.
  6. ^ Kulkarni, Swamini (2019-02-23). "Artificial Intelligence Trends That You Cannot Afford To Ignore". CPO Magazine. Retrieved 2019-09-06.
  7. ^ Duffy, Jill (2019-08-05). "I Improved My Writing With Grammarly, and So Can You". PC Magazine. Retrieved 2019-09-06.
  8. ^ Padmanabhan, Geeta (21 September 2011). "Cool tool". The Hindu. The Hindu Group. Archived from the original on 19 January 2013. Retrieved 24 December 2012.
  9. ^ Lee Chang-sup (1 May 2012). "English again in New Year's resolution?". The Korea Times. Archived from the original on 27 January 2013. Retrieved 24 December 2012.
  10. ^ Fingas, Jon (2019-07-16). "Grammarly's color-coded AI suggestions show what needs fixing". Engadget. Retrieved 2019-09-06.
  11. ^ "Grammarly will now tell you if your writing is bland". Yahoo News. 2019-07-16. Retrieved 2019-09-06.
  12. ^ McCracken, Harry (2019-04-01). "On its 10th anniversary, Grammarly looks way beyond grammar". Fast Company. Retrieved 2019-09-06.
  13. ^ "AI-powered writing assistant Grammarly opens new office in downtown Vancouver | Venture". Retrieved 2019-11-19.
  14. ^ "Grammarly uses AI to detect the tone and tenor of your writing". VentureBeat. 2019-09-24. Retrieved 2019-11-19.
  15. ^ Moore, Ben (22 March 2018). "Grammarly". PCMAG. Retrieved 2018-05-16.
  16. ^ McCracken, Harry (2019-04-01). "On its 10th anniversary, Grammarly looks way beyond grammar". Fast Company. Retrieved 2019-11-19.
  17. ^ Dyomkin, Vsevolod (26 June 2015). "Running Lisp in Production". Grammarly Blog. Grammarly Inc. Retrieved 27 September 2018.
  18. ^ "Grammarly Inc". Bloomberg. Retrieved 2019-09-06.
  19. ^ "Grammarly raises $110 million for a better spell check". TechCrunch. Retrieved 2019-11-19.
  20. ^ "Grammarly raises $90M at over $1B+ valuation for its AI-based grammar and writing tools". TechCrunch. Retrieved 2019-10-10.
  21. ^ "Український стартап Grammarly оцінили у понад 1 мільярд доларів". Економічна правда (in Ukrainian). Retrieved 2020-01-23.
  22. ^ Coberly, Cohen (2018-09-12). "You can finally use Grammarly within Google Docs". TechSpot. Retrieved 2019-04-03.
  23. ^ O'Neill, Patrick Howell (2018-02-05). "Bug in Grammarly browser extension exposes what a user ever writes". CyberScoop. Retrieved 2019-04-03.