1Checker for Windows

  • Free
  • In English
  • V 1.0.1
  • 3.7
  • (80)
  • Security Status

Free all-in-one grammar checker

1Checker is a free proofreading app with several tools to help perfect your English texts. 1Checker features a spell check, grammar check, style reviewer, vocabulary enrichment tool (basically a thesaurus), dictionary and translation tool all in one. 1Checker has a very simple and easy to use interface where you simply open a document within it or paste text, and then simply let 1Checker highlight your errors. You can apply all changes in a click or just apply those that you want to keep.

1Checker is the automated all-in-one proofreading solution for Windows users.

1Checker is designed to solve all these problems. Recently launched by Greedy Intelligence ®C a company dedicated to NLP and applied linguistics technologies, it is the automated all-in-one proofreading solution for Windows users, offering spell/grammar/punctuation checking, vocabulary enrichment, dictionary, translation and much more.

In addition to its Windows 8 app, the newly launched full PC client version (for Windows 7, Vista, XP) can be your alternative choice for writing enhancement with more features and full support, free of charge.

Based on core engines and patented algorithms, 1Checker mainly does proofreading work, tempting to aid you finding writing issues, suggest corrections, give in-depth explanation and detailed examples, and enhance word usage anywhere, any time.

Beside proofreading, dictionary and translation gadgets can assist you in a swift way. At the end of your writing, 1Checker will give you a general evaluation on your word usage and sentence structure. It's mentioned that all these functions can be used in ONE panel from 1Checker.

Regarding the proofreading effect, there is a saying that fact speaks louder than words. Compared with Microsoft Word's spellchecker, 1Checker can do much more.

We've found 1Checker to be accurate for most writings. We do note that 1Checker should be considered a helpful writing tool as it incorporates grammar, spelling, word choice, and style, but not the author's arguments, logic, organization, and ideas. The latter will still need to be examined by a human.

Writers, bloggers, those who email a lot, those with English as a second language, etc.


  • Includes several grammatical tools in one
  • Instantly checks documents
  • Auto or manual correct


  • Accuracy can be hit and miss
  • Dictionary of languages is limited

Also available in other platforms

Program available in other languages

1Checker for PC

  • Free
  • In English
  • V 1.0.1
  • 3.7
  • (80)
  • Security Status

User reviews about 1Checker

  • Neel Kapoor

    by Neel Kapoor

    Yes, it is good software to check spelling and grammar, and other spelling mistakes.

  • Anonymous

    by Anonymous

    Not worth downloading..
    I'm not a fan of this app. It's not reliable. It always seem to crash when I want to check a paragraph or two.
    Pro More

  • Anonymous

    by Anonymous

    Very, very poor attempt. Don't waste time on it..
    Looked really good and I was excited as I do a lot of writing. In my opinion, this software is More

  • Anonymous

    by Anonymous

    I'd recommend this one to anyone who writes regularly.
    We always tend to be over confident while writing. Yet in fact few of us are really famil More


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Laws concerning the use of this software vary from country to country. We do not encourage or condone the use of this program if it is in violation of these laws.