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Proofread Bot
Proofread Bot improves your grammar, style, and vocabulary.
proofreadbot.com
291,338 users
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Overview
Proofread Bot checks your text for style and grammar issues. You can use this tool for free for up to 2000 words a day. If you need to check larger texts, you can buy credits or earn them by teaching the bot new tricks at http://proofreadbot.com/node/add/text.

Proofread Bot did not catch a grammar or style error? Submit it here http://proofreadbot.com/node/add/text !

Plagiarism checks use search engines to find duplicates and require a pro package and your Bing or Google search API key. You can enter API keys at http://proofreadbot.com/user where you can also see how to obtain such keys.

If you like the plugin, please rate it and buy a package to support further development.
Reviews
February 26, 2017
it was awesome for me. I am bad at proofreading myself I love this thing!!!!!!!!!!!!!!!!but sometimes it needs work
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January 14, 2017
I made a point to use horrible grammar. "I done seen that the app Gramarley is much best." Unless an alien from the animated movie, "Home", the mistakes are glaring. The only error found was concern over my usage of first person. No use whatsoever.
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July 21, 2016
Tried it; removed it. Why? 1. It doesn't check grammar, just some simple statistical metrics (short sentence!). For example, it did not flag "I took the Coke off the table and drunk it". 2. It flags the same error repetitively (short sentence!) 3. When it finds a sentence shorter than 7 words, it flags an error, over and over. (short sentence!) 4. It is set for semi-formal English only, and will flag either very formal or academic English, or informal, colloquial writing. 5. In short, it found none of the errors I hoped it would find. Mostly, it found the same *short sentences*, again and again.
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Nice add-on for catching small and simple errors.
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May 26, 2016
I really wish I didn't get it I was working on my Rome project and I got this add-on when I was done and it ruined my whole project.I had to fix all of the mistakes the day after >:(
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April 6, 2016
I honestly don't understand the hatred towards this add on... It does what it is intended to do, find simple and obvious grammar errors
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February 20, 2016
doesn't even let me use it
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February 3, 2016
Useless. My weakest writers could find more errors and make more revisions than this. I wouldn't consider paying for the so-called "pro" version.
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February 11, 2016
Thanks for being so "kind"! Care to give some examples of errors that your so called "weakest writers" found?
January 20, 2016
Boyy... Does not Work
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February 26, 2017
it was great!
May 12, 2015
It does not help at all. It won't tell me where the error is and it doesn't catch the obivious errors
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